TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a black sign that is standing in the grass'. How many words contain the letter 'f' in the sentence.

SOLUTION: 0

PROBLEM: Sentence: 'cows crowd up to a barbed wire fence under a tree'. How many words contain the letter 'n' in the sentence.

SOLUTION: 2

PROBLEM: Sentence: 'a group of fruits that are sitting in different bowls'. How many words contain the letter 't' in the sentence.

SOLUTION:
4