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 is brushing her teeth in this dated photo'. Find frequency of the letter 't'
answer:
5


question:
Sentence: 'a girl laying on a bed posing for a picture'. Find frequency of the letter 'i'
answer:
4


question:
Sentence: 'two cows that have tags on their ears'. Find frequency of the letter 'a'
answer:

4