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

Ex Input:
Sentence: 'some soldiers cutting into a big sheet cake on a table'. How many words contain the letter 'c' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a group of people on a beach beneath a cloudy sky'. How many words contain the letter 'g' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a hot dog in a paper container covered in ketchup and toppings'. How many words contain the letter 'e' in the sentence.

Ex Output:

4