instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a table full of various types of cellphones, pdas and pagers'. Replace the letter 's' with 'f' in the sentence.
answer:
a table full of variouf typef of cellphonef, pdaf and pagerf


question:
Sentence: 'children trying little hamburgers from a tray at school'. Replace the letter 'y' with 'l' in the sentence.
answer:
children trling little hamburgers from a tral at school


question:
Sentence: 'a kid sitting on a counter in a room'. Replace the letter 'n' with 'b' in the sentence.
answer:

a kid sittibg ob a coubter ib a room