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 passanger train is coming down the tracks'. How many words start with the letter 't' in the sentence.
[A]: 3


[Q]: Sentence: 'a woman sitting in a chair next to a lot of vases'. How many words start with the letter 'a' in the sentence.
[A]: 3


[Q]: Sentence: 'a train track scene with one train on the tracks'. How many words start with the letter 't' in the sentence.
[A]:
5