instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
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 man and a woman are walking down the street with an umbrella over their heads'. Find frequency of the letter 'w'
answer:
4

question:
Sentence: 'a tennis player with a cap holding a racket'. Find frequency of the letter 'r'
answer:
2