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

[EX Q]: Sentence: 'a sidewalk with a toilet laying on side with people in background'. How many words contain the letter 'o' in the sentence.
[EX A]: 4

[EX Q]: Sentence: 'adults with helmets sitting on tricycles made for children'. How many words contain the letter 'r' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a man smiles as he drinks a beer'. How many words contain the letter 'j' in the sentence.
[EX A]:
0