TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a green blue and yellow boat sitting in a harbor'. How many words contain the letter 'o' in the sentence.

SOLUTION: 3

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 blue motorcycle parked next to a tree in a forest'. How many words contain the letter 'm' in the sentence.

SOLUTION:
1