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

Ex Input:
Sentence: 'the laptop is disassembled with the parts piled on the outer shell'. How many words contain the letter 'v' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'two angles of a frosted donut with a bite taken out of the side'. How many words contain the letter 'z' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'several sheep standing on a road near the grass'. How many words contain the letter 'l' in the sentence.

Ex Output:

1