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 shot of the tops of several tall buildings in a city'. How many words start with the letter 'a' in the sentence.
2

Sentence: 'a group gathering in which several people are holding frisbees'. How many words start with the letter 'g' in the sentence.
2

Sentence: 'three stuffed animals next to a radiator and below a rocking chair'. How many words start with the letter 'r' in the sentence.

2