TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a large airplane flying over a dry grass hillside'. How many words contain the letter 'e' in the sentence.

SOLUTION: 4

PROBLEM: Sentence: 'a airplane is seen at the airport with other airplanes'. How many words contain the letter 'z' in the sentence.

SOLUTION: 0

PROBLEM: Sentence: 'the fresh fruit is cut up and on the plate'. How many words contain the letter 'a' in the sentence.

SOLUTION:
2