In this task, you need to count the number of times the given letter appears in the given sentence.

Sentence: 'the wooden kitchen has a small child's plastic table in it'. Find frequency of the letter 'n'
3

Sentence: 'a man is taking a picture of a man and woman'. Find frequency of the letter 'a'
8

Sentence: 'there are two giraffes standing together behind a small fence'. Find frequency of the letter 'h'

3