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 silver blue and red jet is flying over a fence'. How many words start with the letter 'f' in the sentence.

A: 2
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Q: Sentence: 'five giraffes meandering along in their outdoor habitat'. How many words start with the letter 'f' in the sentence.

A: 1
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Q: Sentence: 'a young boy in a hat and tie sitting in a field of flowers'. How many words start with the letter 'f' in the sentence.

A:
2
****