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.

[EX Q]: Sentence: 'looking through a detailed window at a clock'. How many words start with the letter 'c' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a man who is holding some food near his mouth'. How many words start with the letter 'f' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'two young boys are reading on a bed but the light of a lamp'. How many words start with the letter 'b' in the sentence.
[EX A]:
3