instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a woman in yellow dress standing next to a horse'. Find frequency of the letter 'l'
answer:
2


question:
Sentence: 'a red fire hydrant opened and spilling water'. Find frequency of the letter 'd'
answer:
4


question:
Sentence: 'a white plate topped with slices of pizza'. Find frequency of the letter 'e'
answer:

4