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

Input: Consider Input: Sentence: 'the teddy bears are posed to sit at the toy picnic table'. How many words contain the letter 'v' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'person standing in the grass striking a baseball with a bat'. How many words contain the letter 's' in the sentence.

Output: 5


Input: Consider Input: Sentence: 'a mixture of pastries laying on wax paper'. How many words contain the letter 'b' in the sentence.


Output: 0