instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a woman is playing an interactive video game'. Find frequency of the letter 't'
answer:
2


question:
Sentence: 'a person trying to flip a skateboard in a garage'. Find frequency of the letter 'a'
answer:
7


question:
Sentence: 'a line of people on a sidewalk with a kid reading the newspaper while sitting on a toilet'. Find frequency of the letter 'p'
answer:

4