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The first project proposed by the students was to develop and build an opener for medicine containers ; the second was to design and build a device for pouring liquids for people with Parkinson ’ s disease ; and the third was to design and construct a 3D puzzle for blind or visually impaired people .
 build, medicine, design, build, s, design, 3D
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 build, medicine, design, build, s, design, 3D