31943
She picks it up , immediately recognizes it ( a drawing of a spiral pattern drawing similar to a nautilus shell ) , and promptly boards a bus heading out of the city to the beach .
 nautilus
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:
 nautilus