instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a river with a long dragon boat in it and rowers on the boat in sets of two, along with two other people'. Find frequency of the letter 'h'
answer:
4


question:
Sentence: 'two bigger elephants standing with a small elephant'. Find frequency of the letter 't'
answer:
5


question:
Sentence: 'an elephant eating hay in an outdoor enclosure'. Find frequency of the letter 'i'
answer:

2