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

Input: Consider Input: Sentence: 'a wooden bench sits leveled straight on a slanted ground'. How many words contain the letter 'l' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a tennis player holds a ball as if to throw it in the air to serve it'. How many words contain the letter 'o' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'a building is shown behind trees and shrubs'. How many words contain the letter 'n' in the sentence.


Output: 4