In this task, you need to replace a letter in the sentence with another given letter.

Input: Consider Input: Sentence: 'this poster is advertising high performance with a girl riding a bicycle and some taxis on the street'. Replace the letter 't' with 'f' in the sentence.

Output: fhis posfer is adverfising high performance wifh a girl riding a bicycle and some faxis on fhe sfreef

Input: Consider Input: Sentence: 'a u.s. military helicopter landing or taking off'. Replace the letter 'i' with 'l' in the sentence.

Output: a u.s. mllltary hellcopter landlng or taklng off

Input: Consider Input: Sentence: 'three large birds sits atop a wooden railing'. Replace the letter 'i' with 't' in the sentence.
Output: three large btrds stts atop a wooden ratltng