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

Ex Input:
Sentence: 'a woman sitting in a chair next to a tea table in the woods'. How many words contain the letter 'i' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'a sidewalk with a toilet laying on side with people in background'. How many words contain the letter 'o' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'a street sign sitting on the ground near a street'. How many words contain the letter 'd' in the sentence.

Ex Output:

1