93879
To lay her roe , the female salmon uses her tail ( caudal fin ) , to create a low-pressure zone , lifting gravel to be swept downstream , excavating a shallow depression , called a redd .
 food: roe
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: roe 
Answer:
 food: roe