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: 'a man sitting in a living room next to other people'. How many words start with the letter 'r' in the sentence.
[A]: 1


[Q]: Sentence: 'a colorful kite flies over top a house'. How many words start with the letter 'f' in the sentence.
[A]: 1


[Q]: Sentence: 'a dog tied to a pole with a bike behind it'. How many words start with the letter 't' in the sentence.
[A]:
2