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: 'a toilet and long handled plunger in a cleaned bathroom'. How many words contain the letter 'i' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a train rests on the tracks in front of people waiting alongside'. How many words contain the letter 'g' in the sentence.

Ex Output:

2