instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'an airplane is being towed away from the jet bridge'. Find frequency of the letter 's'
answer:
1


question:
Sentence: 'three woman are having a discussion in the kitchen'. Find frequency of the letter 'n'
answer:
5


question:
Sentence: 'two cats standing next to a trash can full of tras'. Find frequency of the letter 'c'
answer:

2