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.

[EX Q]: Sentence: 'a guy preforming a skateboard trick at a skate park'. How many words start with the letter 'a' in the sentence.
[EX A]: 4

[EX Q]: Sentence: 'three hotdogs on a picnic table with soft drinks'. How many words start with the letter 'w' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a man is hitting the tennis ball with a racket'. How many words start with the letter 'h' in the sentence.
[EX A]:
1