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 picture of a mirror on a bike'. How many words start with the letter 'o' in the sentence.
2

Sentence: 'a large group of men with bats in a dugout'. How many words start with the letter 'g' in the sentence.
1

Sentence: 'a group of people eating a cake on a table'. How many words start with the letter 'a' in the sentence.

3