3431
The methotrexate was administered as a loading dose of 6 , 000 mg / m2 for a period of one hour followed by an infusion of 1 , 200 mg / m2 / h for 23 hours .
 Chemical: methotrexate
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities: methotrexate 
Answer:
 Chemical: methotrexate