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

Ex Input:
Sentence: 'a close up of a street sign that is not in english'. How many words contain the letter 'p' in the sentence.

Ex Output:
1

Ex Input:
Sentence: 'pair of one kind of birds and another bird perched on a railing'. How many words contain the letter 'j' in the sentence.

Ex Output:
0

Ex Input:
Sentence: 'there is a girl that is standing smiling holding a hot dog'. How many words contain the letter 'm' in the sentence.

Ex Output:
1