2117
In addition , AChE inhibited by an analogue of tabun ( i . e . , O - ethyl isopropylphosphonofluoridate ) was nearly as resistant to reactivation as tabun - inhibited AChE .
 Chemical: tabun; Chemical: O - ethyl isopropylphosphonofluoridate; Chemical: tabun
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: tabun, O - ethyl isopropylphosphonofluoridate, tabun 
Answer:
 Chemical: tabun; Chemical: O - ethyl isopropylphosphonofluoridate; Chemical: tabun