In this task, you need to count the number of words in a sentence that contain the given letter

[EX Q]: Sentence: 'two children practicing for a ski race without poles'. How many words contain the letter 'e' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a view from inside a train cart going down a track'. How many words contain the letter 'e' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a beach filled with people and large umbrellas'. How many words contain the letter 'n' in the sentence.
[EX A]:
1