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

Q: Sentence: 'a couple of people are sitting at a table'. Find frequency of the letter 'e'

A: 5
****
Q: Sentence: 'a pizza pie sitting on a wooden table with tongs'. Find frequency of the letter 't'

A: 5
****
Q: Sentence: 'a group of matching single- and double-decker busses sit in a field'. Find frequency of the letter 'd'

A:
4
****