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

Sentence: 'a train on the side of a road on the edge of the water'. How many words contain the letter 'u' in the sentence.
0

Sentence: 'a man flying through the air while riding a snowboard'. How many words contain the letter 'x' in the sentence.
0

Sentence: 'a man jokingly sitting on a toilet reading a newspaper outside'. How many words contain the letter 'u' in the sentence.

1