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 silver and blue amtrak train sitting below tall buildings'. How many words start with the letter 'b' in the sentence.
3

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 bunch of tables in a hanger with an airplane overhead'. How many words start with the letter 'a' in the sentence.

4