8441
Participants in a one-night stand often have not known each other long and have had minimal time to get acquainted before engaging in sexual activity , and often have little to no contact with one another aside from sex .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None