instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'street signs hanging next to a traffic light on a city street'. Replace the letter 'g' with 'm' in the sentence.
answer:
street simns hanminm next to a traffic limht on a city street

question:
Sentence: 'a crowd looking at a trio of planes that are sitting idle'. Replace the letter 'a' with 'e' in the sentence.
answer:
e crowd looking et e trio of plenes thet ere sitting idle

question:
Sentence: 'an open laptop equipped with a webcam in front of a television'. Replace the letter 'o' with 'm' in the sentence.
answer:
an mpen laptmp equipped with a webcam in frmnt mf a televisimn