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 man standing next to a car talking on the phone'. How many words start with the letter 't' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a person taking a slice of pizza from a pie'. How many words start with the letter 'p' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a small toy house is built out of legos'. How many words start with the letter 'l' in the sentence.

Ex Output:

1