instruction:
Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.
question:
Human gestation is divided into three trimesters of ____ months each.
answer:
three

question:
Divorce affects one out of every ____ marriages today.
answer:
four

question:
Pertussis is highly contagious with symptoms that can linger ____ to ten weeks.
answer:
six