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: 'man looking up at the ceiling while holding a flip phone'. How many words start with the letter 'h' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'the men are holding on to surfboards outside'. How many words start with the letter 'o' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a guy in a cast sits on the edge of his bed'. How many words start with the letter 'a' in the sentence.
[EX A]:
2