10143
We examined ( 1 ) reproductive physiology , ( 2 ) pair - maintenance behaviors in several contexts , and ( 3 ) circulating and brain steroid levels .
 Chemical: steroid
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: steroid