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 large group of men with bats in a dugout'. How many words start with the letter 'g' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a group of four skiers are getting ready to embark'. How many words start with the letter 'g' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a cat that is looking into a computer screen'. How many words start with the letter 'a' in the sentence.
[EX A]:
2