TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a child on the sand and a boat and some water'. How many words contain the letter 's' in the sentence.

SOLUTION: 2

PROBLEM: Sentence: 'some girls on a soccer field playing soccer'. How many words contain the letter 'j' in the sentence.

SOLUTION: 0

PROBLEM: Sentence: 'a barefoot girl with braids flies a kite'. How many words contain the letter 'l' in the sentence.

SOLUTION:
2