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

Ex Input:
Sentence: 'multiple birds on the ground in a parking lot'. How many words contain the letter 'm' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'five sheep out in an open field eating straw'. How many words contain the letter 'd' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a woman and two little girls fixing a plate of food'. How many words contain the letter 'u' in the sentence.

Ex Output:

0