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

Sentence: 'an orange cat is lounging on a gray couch'. How many words contain the letter 'c' in the sentence.
2

Sentence: 'young girls with backpacks are standing near stairs that look to go to the subway'. How many words contain the letter 'r' in the sentence.
4

Sentence: 'a big long desk with some computers on it'. How many words contain the letter 'l' in the sentence.

1