20567
METHODS : Twenty - two family history - positive ( FHP ; age = 22 . 7 years , SD = 1 . 9 ) and 18 family history - negative ( FHN ; age = 23 . 7 , SD = 1 . 8 ) subjects performed the SST in fMRI in two randomized visits : once during intravenous infusion of alcohol , clamped at a steady - state breath alcohol ( BrAC ) concentration of 60 mg / dL , and once during infusion of placebo saline .
 Chemical: alcohol; Chemical: alcohol
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: alcohol; Chemical: alcohol