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: 'the inside of a toilet stall on an airplane'. How many words start with the letter 'a' in the sentence.
[A]: 3


[Q]: Sentence: 'a traffic light with a red light and an arrow pointing to the right'. How many words start with the letter 't' in the sentence.
[A]: 3


[Q]: Sentence: 'a a man wearing a red neck tie around his neck'. How many words start with the letter 'n' in the sentence.
[A]:
2