instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a family sitting at a table in a restaurant looking at their phones'. Find frequency of the letter 't'
answer:
8


question:
Sentence: 'the sun goes down over a bike tied to a bench at the beach'. Find frequency of the letter 't'
answer:
5


question:
Sentence: 'a commercial airplane at a jetway at an airport'. Find frequency of the letter 'm'
answer:

2