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 guy with a beard holds a white mug with strawberries on it in front of a microwave'. How many words start with the letter 'a' in the sentence.
4

Sentence: 'a mirror a sink a toilet  and a blue basket'. How many words start with the letter 'a' in the sentence.
5

Sentence: 'a bus is parked on the side of a road in front of a building'. How many words start with the letter 'a' in the sentence.

3