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

Sentence: 'a tree by a house has a traffic sign attached to it'. How many words contain the letter 'm' in the sentence.
0

Sentence: 'cows crowd up to a barbed wire fence under a tree'. How many words contain the letter 'n' in the sentence.
2

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

0