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.

Ex Input:
Sentence: 'a take out sandwich and two bottles of soda'. How many words start with the letter 'a' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a person riding a skateboard down a street'. How many words start with the letter 'a' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a cat standing on top of a car trunk next to a parked motorcycle'. How many words start with the letter 't' in the sentence.

Ex Output:

3