instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a close up of a train on train tracks at night'. Replace the letter 'n' with 'm' in the sentence.
answer:
a close up of a traim om traim tracks at might


question:
Sentence: 'two knives are embedded in a wooden table'. Replace the letter 'a' with 'l' in the sentence.
answer:
two knives lre embedded in l wooden tlble


question:
Sentence: 'a tennis player looks downward as she swings her racket'. Replace the letter 's' with 'u' in the sentence.
answer:

a tenniu player looku downward au uhe uwingu her racket