2945
By contrast , ALF and ALF + ALN significantly lowered the histological parameters of both bone resorption and formation .
 Chemical: ALF; Chemical: ALF; Chemical: ALN
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: ALF, ALF, ALN 
Answer:
 Chemical: ALF; Chemical: ALF; Chemical: ALN