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.

Sentence: 'a young man in a suit looks down and adjusts his tie'. How many words start with the letter 'a' in the sentence.
4

Sentence: 'some zebras standing around in a special area'. How many words start with the letter 'i' in the sentence.
1

Sentence: 'a large jet flying through a blue cloudless sky'. How many words start with the letter 'a' in the sentence.

2