TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a train that is pulling into the station'. How many words contain the letter 't' in the sentence.

SOLUTION: 5

PROBLEM: Sentence: 'a child is lighting candles on a cake'. How many words contain the letter 't' in the sentence.

SOLUTION: 1

PROBLEM: Sentence: 'can of soft drink next to a computer keyboard and monitor'. How many words contain the letter 'd' in the sentence.

SOLUTION:
3