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Significantly more weight gain occurred with olanzapine than with risperidone : the increase in weight at 4 months relative to baseline weight was 17 . 3 % ( 95 % CI = 14 . 2 % - 20 . 5 % ) with olanzapine and 11 . 3 % ( 95 % CI = 8 . 4 % - 14 . 3 % ) with risperidone .
 Disease: weight gain; Chemical: olanzapine; Chemical: risperidone; Chemical: olanzapine; Chemical: risperidone
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: weight gain; Chemical: olanzapine; Chemical: risperidone; Chemical: olanzapine; Chemical: risperidone