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:
Counterpoint is simply ____ or more melodies played simultaneously.
answer:
two


question:
Environmentalists warn that ____ turtle species are in severe decline from over-exploitation.
answer:
six


question:
Female dugongs give birth underwater to a single calf at three to ____ year period of time.
answer:

seven