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: 'giraffe brought in ground next to some trees in exhibit'. How many words start with the letter 't' in the sentence.
[A]: 2


[Q]: Sentence: 'a clock tower sitting on the side of a walkway'. How many words start with the letter 't' in the sentence.
[A]: 2


[Q]: Sentence: 'a very big bus with some decoration on the bush'. How many words start with the letter 'b' in the sentence.
[A]:
3