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

Sentence: 'a teddy bear that is sitting up on the ground'. How many words contain the letter 'm' in the sentence.
0

Sentence: 'a group of many horses going about in a grassy meadow'. How many words contain the letter 'f' in the sentence.
1

Sentence: 'the toilet space walls are tiled in black and white'. How many words contain the letter 'l' in the sentence.

4