81688
In Singapore , the term " crayfish " typically refers to " Thenus orientalis " , a seawater crustacean from the slipper lobster family .
 Singapore
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Singapore