instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'there is an old stove with old pots on the burners'. Find frequency of the letter 't'
answer:
5


question:
Sentence: 'a person is performing a stunt on a snowboard'. Find frequency of the letter 'p'
answer:
2


question:
Sentence: 'an airplane is being towed away from the jet bridge'. Find frequency of the letter 's'
answer:

1