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

Ex Input:
Sentence: 'a man is holding a bunch of green bananas in his yard'. How many words contain the letter 'i' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'a commuter train near a platform with no one on it'. How many words contain the letter 'z' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'zebra walking through some desolate savanna alone during the day'. How many words contain the letter 'e' in the sentence.

Ex Output:

5