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 person riding a skateboard down a street'. How many words start with the letter 'a' in the sentence.
3

Sentence: 'a group of people that are by and elephant'. How many words start with the letter 'a' in the sentence.
3

Sentence: 'a shirtless man grimacing and holding a pair of scissors'. How many words start with the letter 'p' in the sentence.

1