instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Water is the only substance on earth that exists naturally in _ states .
answer:
three


question:
Liquid crystals lack the full _ dimensional position and orientation order of ordinary crystals.
answer:
three


question:
Lobsters have _ walking legs and two legs bearing claws.
answer:

eight