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

Input: Consider Input: Sentence: 'a computer desk holding a laptop computer and white ceramic lamp'. How many words contain the letter 'r' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'two angles of a frosted donut with a bite taken out of the side'. How many words contain the letter 'z' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a woman walks in a park with a bike and a dog'. How many words contain the letter 'i' in the sentence.


Output: 3