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

Sentence: 'a woman holds some baked goods at the convention'. Find frequency of the letter 'd'
3

Sentence: 'a blue bowl holding mashed bananas and oatmeal with a bottle of sugar and cinnamon sitting beside it'. Find frequency of the letter 'g'
3

Sentence: 'a group of beautiful women sitting around a table'. Find frequency of the letter 'g'

2