instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a little child looking up to a camera holding a cell phone'. Find frequency of the letter 'g'
answer:
2


question:
Sentence: 'a couple of boys in a field playing baseball'. Find frequency of the letter 'i'
answer:
3


question:
Sentence: 'a couple of people that are skateboarding down the road'. Find frequency of the letter 'w'
answer:

1