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 male skateboarder in a black shirt doing a trick'. How many words start with the letter 'a' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a man wearing a striped tie and a jacket'. How many words start with the letter 'j' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a lot of people that are in the kitchen'. How many words start with the letter 't' in the sentence.

Ex Output:

2