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

Example Input: Sentence: 'a bathroom with a tub connected to a pool with some sinks inside'. Replace the letter 'e' with 'b' in the sentence.
Example Output: a bathroom with a tub connbctbd to a pool with somb sinks insidb

Example Input: Sentence: 'a basket holds flowers, twigs, and various fruits'. Replace the letter 'a' with 'g' in the sentence.
Example Output: g bgsket holds flowers, twigs, gnd vgrious fruits

Example Input: Sentence: 'an elephant with tusks standing in an enclosure'. Replace the letter 'e' with 'w' in the sentence.
Example Output:
an wlwphant with tusks standing in an wnclosurw