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

Ex Input:
Sentence: 'multiple birds on the ground in a parking lot'. How many words contain the letter 'm' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a group of people skiing down a mountain slope'. How many words contain the letter 'e' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a beautiful young woman eating a giant slice of cheese pizza'. How many words contain the letter 'y' in the sentence.

Ex Output:

1