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.
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Question: Beryllium has ____ protons and four electrons.

Answer: four


Question: Autism affects ____ times as many males as it does females.

Answer: three


Question: Potential energy is divided into ____ different types of energy.

Answer:
three