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

Sentence: 'man and woman wearing all red standing in a snowy field'. How many words contain the letter 'k' in the sentence.
0

Sentence: 'a view from a plane window near a large snowy peak'. How many words contain the letter 'u' in the sentence.
0

Sentence: 'there are some warning signs on a public toilet'. How many words contain the letter 'a' in the sentence.

3