instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'soccer players on opposite teams fight for control over a ball'. Find frequency of the letter 't'
answer:
4


question:
Sentence: 'bananas are being dried in a tropical setting'. Find frequency of the letter 'i'
answer:
5


question:
Sentence: 'a brownie dwarfs a small plastic automobile decoration'. Find frequency of the letter 'd'
answer:

2