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.

[Q]: Sentence: 'there is a man playing in a game of tennis'. How many words start with the letter 'i' in the sentence.
[A]: 2


[Q]: Sentence: 'a striped bus travels down a city street at night'. How many words start with the letter 'a' in the sentence.
[A]: 3


[Q]: Sentence: 'skateboarders wait on the ledge of a skateboard park for their turn'. How many words start with the letter 'p' in the sentence.
[A]:
1