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 couple of people flying a kite in a field'. How many words start with the letter 'a' in the sentence.
3

Sentence: 'a large group of motorcyclists waiting in the street'. How many words start with the letter 'g' in the sentence.
1

Sentence: 'a clock tower in front of a building in the snow'. How many words start with the letter 'f' in the sentence.

1