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: 'people all eating together and pretending to like each other'. How many words start with the letter 'p' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a clock tower is standing next to palm trees'. How many words start with the letter 't' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a tennis player leaps in the air by the outer line of the court'. How many words start with the letter 'a' in the sentence.

Ex Output:

2