instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a small white plane sitting on top of the ocean'. Find frequency of the letter 'e'
answer:
4


question:
Sentence: 'a glass a rope and a pair of scissors'. Find frequency of the letter 's'
answer:
6


question:
Sentence: 'two asian women cooking in an apartment kitchen'. Find frequency of the letter 'g'
answer:

1