instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a man paddle boarding by a boat dock in a city'. Find frequency of the letter 'o'
answer:
3


question:
Sentence: 'seagulls sit on the posts of a seaside balcony by a clock tower'. Find frequency of the letter 'g'
answer:
1


question:
Sentence: 'a camera light and camera is set up in a room'. Find frequency of the letter 'h'
answer:

1