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

Sentence: 'a large formal living room with yellow couches and table'. Find frequency of the letter 'v'
1

Sentence: 'a mixed bouquet of flowers in a glass vase set before a window'. Find frequency of the letter 'w'
3

Sentence: 'a teddy bear sitting on top of a bed with videos and books'. Find frequency of the letter 'd'
5