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

Ex Input:
Sentence: 'a black and white photo of a plane sitting on a runway'. How many words contain the letter 'b' in the sentence.

Ex Output:
1

Ex Input:
Sentence: 'a picture of bottles and cans in someones kitchen'. How many words contain the letter 'c' in the sentence.

Ex Output:
3

Ex Input:
Sentence: 'busses cars and pedestrians on a busy city street'. How many words contain the letter 'j' in the sentence.

Ex Output:
0