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

Ex Input:
Sentence: 'an orange cat is lounging on a gray couch'. How many words contain the letter 'c' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'many different species of sheep in display at a museum'. How many words contain the letter 'p' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a group of people around a table with boxes of pizza eating'. How many words contain the letter 'l' in the sentence.

Ex Output:

2