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

Ex Input:
Sentence: 'two children practicing for a ski race without poles'. How many words contain the letter 'e' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'the bowl on the table is full of cut fruit'. How many words contain the letter 'b' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a big truck full of items and it is pack full'. How many words contain the letter 'h' in the sentence.

Ex Output:

0