4987
Experimental PE was induced in anesthetized , male Sprague - Dawley rats by infusing 25 mu m polystyrene microspheres ( 1 . 95 million / 100 g body wt , right jugular vein ) producing moderate PE .
 Chemical: polystyrene
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: polystyrene 
Answer:
 Chemical: polystyrene