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

Ex Input:
Sentence: 'a line of very tall buildings next to a clock tower'. How many words contain the letter 'o' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'group of kids play frisbee golf in the middle of the woods'. How many words contain the letter 't' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'three children are sitting on a bench by the beach'. How many words contain the letter 'g' in the sentence.

Ex Output:

1