In this task, you need to count the number of words in a sentence that start with the given letter. Answer with numbers and not words.

Q: Sentence: 'a small bathroom has a mirror vanity and toilet'. How many words start with the letter 'b' in the sentence.

A: 1
****
Q: Sentence: 'horses are being walked around a race track'. How many words start with the letter 't' in the sentence.

A: 1
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Q: Sentence: 'a woman stands in front of an open refrigerator'. How many words start with the letter 'a' in the sentence.

A:
2
****