instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a person holding onto a pink kite at the beach'. Find frequency of the letter 'n'
answer:
4


question:
Sentence: 'a tennis player that is running to get the tennis ball'. Find frequency of the letter 't'
answer:
7


question:
Sentence: 'a brown and white dog laying on a pile of dry grass'. Find frequency of the letter 'g'
answer:

3