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: 'the two cats are walking on the desk'. How many words start with the letter 't' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a bunch of ties that are on a metal rack'. How many words start with the letter 't' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a baseball player hitting a pitch in a professional ball game in a stadium as the crowd watches'. How many words start with the letter 'a' in the sentence.
[EX A]:
5