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

Ex Input:
Sentence: 'a woman is hitting a tennis ball with her racket'. How many words contain the letter 'c' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a kitchen filled with appliances and furniture next to windows'. How many words contain the letter 'p' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'two zebras bending over eating grass in a grassy area'. How many words contain the letter 'r' in the sentence.

Ex Output:

5