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

Sentence: 'a computer desk holding a laptop computer and white ceramic lamp'. How many words contain the letter 'r' in the sentence.
3

Sentence: 'an image of a person holding a blunt object is rendered in red and blue tones'. How many words contain the letter 'x' in the sentence.
0

Sentence: 'woman with blue streaked hair sitting cross legged on bed'. How many words contain the letter 'u' in the sentence.

1