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

Example Input: Sentence: 'a woman in a floral swimsuit holds a pink umbrella'. Replace the letter 't' with 'l' in the sentence.
Example Output: a woman in a floral swimsuil holds a pink umbrella

Example Input: Sentence: 'a giraffe sticks its tongue out in the air'. Replace the letter 'e' with 'l' in the sentence.
Example Output: a giraffl sticks its tongul out in thl air

Example Input: Sentence: 'a baseball player reaching for a baseball in the outfield'. Replace the letter 'e' with 'h' in the sentence.
Example Output:
a bashball playhr rhaching for a bashball in thh outfihld