instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a ready to eat pizza on a rack'. Find frequency of the letter 'r'
answer:
2

question:
Sentence: 'a man with headphones on is hunched over a sink while being recorded'. Find frequency of the letter 'd'
answer:
4

question:
Sentence: 'a small elephant standing next to a lush green field'. Find frequency of the letter 'x'
answer:
1