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 couple of people flying a kite in a field'. How many words start with the letter 'a' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'this photo shows four copies of the same fire hydrant'. How many words start with the letter 't' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a bear and a traffic guard photoshopped into a picture downtown'. How many words start with the letter 'a' in the sentence.
[EX A]:
4