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.

[Q]: Sentence: 'there are people in chairs watching a projection screen'. How many words start with the letter 't' in the sentence.
[A]: 1


[Q]: Sentence: 'a young boy hitting a tee ball with a red bat'. How many words start with the letter 'b' in the sentence.
[A]: 3


[Q]: Sentence: 'a gaming system is set up under a desk'. How many words start with the letter 's' in the sentence.
[A]:
2