10507
Forty oopherectomized Wistar - Albino rats were used , and assigned to receive saline , 17 beta Estradiol hemihydrate ( 4 mg / kg ) , 17 beta Estradiol hemihydrate ( 4 mg / kg ) and metformin ( 50 mg / kg ) , 17 beta Estradiol hemihydrate ( 4 mg / kg ) and MPA ( 1 mg / day ) for 14 days .
 Chemical: 17 beta Estradiol hemihydrate; Chemical: 17 beta Estradiol hemihydrate; Chemical: metformin; Chemical: 17 beta Estradiol hemihydrate; Chemical: MPA
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: 17 beta Estradiol hemihydrate; Chemical: 17 beta Estradiol hemihydrate; Chemical: metformin; Chemical: 17 beta Estradiol hemihydrate; Chemical: MPA