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.

Q: Steam distillation refers to the distillation of ____ immiscible liquids.

A: two
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Q: Tall fescue produces the ____ diazaphenanthrene alkaloids, perlolidone and perloline.

A: two
****
Q: Spermatogenesis creates ____ sperm of equal size.

A:
four
****