instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a u.s. military helicopter landing or taking off'. Replace the letter 'i' with 'l' in the sentence.
answer:
a u.s. mllltary hellcopter landlng or taklng off


question:
Sentence: 'a man that is throwing a frizbee in the woods'. Replace the letter 'g' with 'u' in the sentence.
answer:
a man that is throwinu a frizbee in the woods


question:
Sentence: 'a train platform at a train stop with brick style flooring'. Replace the letter 'n' with 's' in the sentence.
answer:

a trais platform at a trais stop with brick style floorisg