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

Input: Consider Input: Sentence: 'a giraffe that is eating some leaves from a tree'. How many words contain the letter 'g' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a white biplane on grassy area next to buildings'. How many words contain the letter 'g' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a close up picture of a vase and flowers in the vase'. How many words contain the letter 'r' in the sentence.


Output: 2