In this task, you need to count the number of words in a sentence that contain the given letter

Ex Input:
Sentence: 'a person in uniform is on a motorcycle near other uniformed people'. How many words contain the letter 'r' in the sentence.

Ex Output:
6


Ex Input:
Sentence: 'a group of people cooking pancakes in the field'. How many words contain the letter 'g' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a black plastic bowl sitting on top of a wooden table'. How many words contain the letter 'p' in the sentence.

Ex Output:

2