TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'some soldiers cutting into a big sheet cake on a table'. How many words contain the letter 'c' in the sentence.

SOLUTION: 2

PROBLEM: Sentence: 'a tree by a house has a traffic sign attached to it'. How many words contain the letter 'm' in the sentence.

SOLUTION: 0

PROBLEM: Sentence: 'an arm is extended and bananas are lined up against it'. How many words contain the letter 'r' in the sentence.

SOLUTION:
2