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: 'a very large pizza with pepperoni and olives and someone taking  massive slice'. How many words start with the letter 'l' in the sentence.
[A]: 1


[Q]: Sentence: 'a group of parked bikes sitting on the side of a road'. How many words start with the letter 'o' in the sentence.
[A]: 3


[Q]: Sentence: 'a man pitching a baseball from a mound to a home plate'. How many words start with the letter 'a' in the sentence.
[A]:
4