In this task, you are given a paragraph (from a research paper) and your task is to classify each sentence of the paragraph (assume n sentence) into the following categories: Background, Purpose, Method, Finding/Contribution, or Other. Return the output in this format: 1 - category of sentence 1, 2 - category of sentence 2, ..., n - category of sentence n; where each number indicates the order of the sentence. The categories can be identified using the following questions: 
 Background: - Why is this problem important? - What relevant works have been done before? - What did the previous works miss? - What are the high-level research questions? - How might this help other researchers?
 Purpose: - What specific things do the researchers want to do? - What specific knowledge do the researchers want to know? - What specific hypothesis do the researchers want to test?
 Method: - How did the researchers do it or find it out? - What are the procedures and steps of this research?
 Finding/Contribution: - What did the researchers find out? Did the proposed methods work? - Did things behave as the researchers expected?
Other: put every text fragment that does not fit into any of the categories above here. Put a sentence here if its not in English, is not part of the article, contains numbers and dates, is a caption of a figure or a table, is a formatting error, or you are not sure about it.

Q: The global spread of Coronavirus Disease 2019 (COVID-19) is overwhelming many health-care systems. As a result, epidemiological models are being used to inform policy on how to effectively deal with this pandemic. We note that the majority of existing models do not take into account differences in the amount of interactions between individuals (i.e. the underlying human interaction network). Using network science we demonstrate how this network of interactions can be used to predict the spread of the virus and to inform policy on the most successful mitigation and suppression strategies. Although applicable to disease modelling in general, our results emphasize how network science can improve the predictive power of current COVID-19 epidemiological models. We provide commented source code for all our analyses so that they can easily be integrated into current and future epidemiological models.

A: 1 - background, 2 - background, 3 - method, 4 - method, 5 - background, 6 - finding, 7 - finding
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Q: Background: Hand hygiene is crucial for safe healthcare. Although the use of alcohol hand rubs is encouraged in clinics, there are few studies that focus on the proper use of alcohol hand rubs among nursing students. Objectives: The aim of this study is to evaluate the effectiveness of alcohol-based hand rub application and proper hand washing techniques which influence nursing students' hand hygiene compliance to make recommendations for future practice of hand hygiene training. Design: This cross-sectional study was carried out from May 3/June 3 2016 with the participation of 257 nursing students. Their hand hygiene techniques were analyzed using a UV lamp and an alcohol-based mix marked with fluorescence. Results: Of the participants, 77.0% were first-year students and 55.3% were males. The percentage of skin surface covered by alcohol-based hand rub was 82.0% on both hands. The lowest percentages of skin area covered by fluorescent-labelled hand rub were identified in the metacarpal area near the wrist and thumbs. While there was a difference between points for using proper hand-rub technique on the dorsal and palmar surfaces of the hands (p < 0.01), no difference was determined between the right and left hands (p > 0.05). It was found that the largest fluorescent remains were on fingers after hand-washing, and there was a difference in terms of hand-washing points between right-left hands and dorsal-palmar surfaces (p < 0.01). Conclusions: There is a need to improve nursing students' compliance with hand hygiene. It is suggested that the use of hand-rub among students should be popularized, and new techniques that prevent the frequently omitted areas of the hands should be integrated into the curriculum.

A: 1 - background, 2 - background, 3 - background, 4 - purpose, 5 - method, 6 - method, 7 - finding, 8 - finding, 9 - finding, 10 - finding, 11 - finding, 12 - finding, 13 - finding, 14 - finding, 15 - finding, 16 - finding, 17 - finding
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Q: The present study aimed to investigate the frequency of pathogenic Leptospira spp. in Brazilian bats and to determine possible risk factors associated to it. Ninety two bats of 12 species were evaluated. Whole genomic DNA from kidneys was extracted and real-time PCR specific to pathogenic Leptospira spp. was applied. Association between the frequency of specimens positive for Leptospira spp. and sex, age, bat species or family, season of collection, geographic localization and feeding habits was evaluated. The results showed that 39.13% of analyzed bats were found positive for Leptospira spp. Nine bat species had at least one positive result. There was no association among the evaluated variables and frequency of pathogenic Leptospira spp. Although the limitations due to lack of Leptospira spp. isolation, leptospiral carriage was demonstrated in bats of different species from southern Brazil, which reinforces the need for surveillance of infectious agents in wild animals.

A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
1 - purpose, 2 - method, 3 - method, 4 - method, 5 - method, 6 - method, 7 - finding, 8 - finding, 9 - finding, 10 - finding, 11 - finding, 12 - finding
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