instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'two men in black wet suits beside a white surfboard'. Find frequency of the letter 'e'
answer:
5


question:
Sentence: 'a bunch of people are standing out in a field a red one has their arms out as a white ball is in the air'. Find frequency of the letter 'e'
answer:
9


question:
Sentence: 'person with cross-country skies and poles standing in the middle of a trail'. Find frequency of the letter 't'
answer:

5