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

Ex Input:
Sentence: 'a pizza sitting on top of a black cutting board'. How many words contain the letter 'g' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a zebra is standing in the shallow water'. How many words contain the letter 't' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a calico cat standing on a computer table next to a laptop'. How many words contain the letter 'x' in the sentence.

Ex Output:

1