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 small bathroom has a mirror vanity and toilet'. How many words start with the letter 'b' in the sentence.
1

Sentence: 'while in a restaurant a young man is playing with his phone'. How many words start with the letter 'w' in the sentence.
2

Sentence: 'a magnifying glass scoping out windows on a house'. How many words start with the letter 'a' in the sentence.

2