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

Ex Input:
Sentence: 'a giraffe walking in the grass near a building'. How many words contain the letter 'd' in the sentence.

Ex Output:
1

Ex Input:
Sentence: 'sitting room with couch and entertainment system in cabinets'. How many words contain the letter 'e' in the sentence.

Ex Output:
3

Ex Input:
Sentence: 'a baseball batter is close to hitting a baseball'. How many words contain the letter 'z' in the sentence.

Ex Output:
0