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

Sentence: 'the miniature, elaborate exhibit depicts an ancient boating scene'. Find frequency of the letter 'n'
6

Sentence: 'a woman in a messy kitchen with a child'. Find frequency of the letter 'a'
4

Sentence: 'the person is sitting in the snow with their surf board'. Find frequency of the letter 'd'
1