instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a young girl skiing down a snowy mountain'. Find frequency of the letter 'l'
answer:
1


question:
Sentence: 'a castle like bed room that has the era of templar knight similarities'. Find frequency of the letter 'm'
answer:
3


question:
Sentence: 'an elephant in the shade of a tree'. Find frequency of the letter 's'
answer:

1