instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a chair and umbrella on a sandy beach'. Find frequency of the letter 's'
answer:
1

question:
Sentence: 'a double parking meter is decorated with a picture of a girl with wings on her feet'. Find frequency of the letter 'r'
answer:
6

question:
Sentence: 'a room with decorations on a shelf and a painting on the wall'. Find frequency of the letter 'n'
answer:
6