instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a man flying through the air on a bicycle'. Find frequency of the letter 'u'
answer:
1


question:
Sentence: 'a commuter bus in england by a clock tower building'. Find frequency of the letter 'w'
answer:
1


question:
Sentence: 'there is now image here to provide a caption for'. Find frequency of the letter 'o'
answer:

5