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: 'this grizzly bear is standing in some shallow water'. How many words start with the letter 'g' in the sentence.
[A]: 1


[Q]: Sentence: 'a very large carrot and a large knife'. How many words start with the letter 'l' in the sentence.
[A]: 2


[Q]: Sentence: 'a passenger airplane is docked up on the tarmac to allow passengers entrance'. How many words start with the letter 'a' in the sentence.
[A]:
3