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 herd of elephants with large and small elephants at the zoo'. How many words start with the letter 'a' in the sentence.

A: 3
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Q: Sentence: 'a woman has just hit the tennis ball with her racket'. How many words start with the letter 't' in the sentence.

A: 2
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Q: Sentence: 'some black birds sitting on some rocks and some water'. How many words start with the letter 'b' in the sentence.

A:
2
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