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 woman is standing in the rain with her umbrella'. How many words start with the letter 't' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a woman standing next to another woman in front of a tv'. How many words start with the letter 'a' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a blue and yellow airplane performing a stunt'. How many words start with the letter 'a' in the sentence.
[EX A]:
4