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

Ex Input:
Sentence: 'a man sits on a bench with a dog in lap reading'. How many words contain the letter 'x' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a skier skiing on the mountain with trees behind him'. How many words contain the letter 'z' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'modern male commuter wired with multiple electronic devices'. How many words contain the letter 'p' in the sentence.

Ex Output:

1