13706
No significant difference was found between the groups with regard to perfluorooctane sulfonate ( PFOS ) , perfluorooctanoic acid ( PFOA ) , mono - ethylhexyl phthalate ( MEHP ) and di - ( 2 - ethylhexyl ) phthalate ( DEHP ) concentrations .
 Chemical: perfluorooctane sulfonate; Chemical: PFOS; Chemical: perfluorooctanoic acid; Chemical: PFOA; Chemical: mono - ethylhexyl phthalate; Chemical: MEHP; Chemical: di - ( 2 - ethylhexyl ) phthalate; Chemical: DEHP
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: perfluorooctane sulfonate; Chemical: PFOS; Chemical: perfluorooctanoic acid; Chemical: PFOA; Chemical: mono - ethylhexyl phthalate; Chemical: MEHP; Chemical: di - ( 2 - ethylhexyl ) phthalate; Chemical: DEHP