instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a room with a bed, lamps, tables and pillows'. Replace the letter 's' with 'b' in the sentence.
answer:
a room with a bed, lampb, tableb and pillowb


question:
Sentence: 'a polar bear relaxing in a man-made pool'. Replace the letter 'r' with 'x' in the sentence.
answer:
a polax beax xelaxing in a man-made pool


question:
Sentence: 'a person with a skateboard standing in the street'. Replace the letter 't' with 'z' in the sentence.
answer:

a person wizh a skazeboard szanding in zhe szreez