instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'people wait for a train on a snowy sidewalk'. Replace the letter 'n' with 'm' in the sentence.
answer:
people wait for a traim om a smowy sidewalk


question:
Sentence: 'a well dressed man standing near his early bicycle'. Replace the letter 'e' with 'd' in the sentence.
answer:
a wdll drdssdd man standing ndar his darly bicycld


question:
Sentence: 'a young man playing a game of tennis as a crowd watches'. Replace the letter 's' with 'h' in the sentence.
answer:

a young man playing a game of tennih ah a crowd watcheh