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

[EX Q]: Sentence: 'a sandwich vegetables and a beer sitting on a table'. How many words start with the letter 'a' in the sentence.
[EX A]: 4

[EX Q]: Sentence: 'a group of people standing around a store selling kites'. How many words start with the letter 's' in the sentence.
[EX A]:
3