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

Ex Input:
Sentence: 'some soldiers cutting into a big sheet cake on a table'. How many words contain the letter 'c' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a white pickup truck thats parked on the corner of an intersection'. How many words contain the letter 'v' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a childs bedroom with a doll sitting on the bed'. How many words contain the letter 'd' in the sentence.

Ex Output:

4