TASK DEFINITION: You will be given two sentences. One of them is created by paraphrasing the original one, with changes on an aspect, or using synonyms. Your task is to decide what is the difference between two sentences. Types of change are explained below:
 Tense: The verbs in the sentence are changed in tense.
Number: Plural nouns, verbs and pronouns are changed into single ones or the other way around.
Voice: If the verbs are in active voice, they're changed to passive or the other way around.
Adverb: The paraphrase has one adverb or more than the original sentence.
Gender: The paraphrase differs from the original sentence in the gender of the names and pronouns.
Synonym: Some words or phrases of the original sentence are replaced with synonym words or phrases. Changes in the names of people are also considered a synonym change. Classify your answers into Tense, Number, Voice, Adverb, Gender, and Synonym.
PROBLEM: original sentence: Grace was happy to trade me her sweater for my jacket . She thinks it looks great on her . paraphrase: grace was happy to trade me her pullover for my coat . she thinks it looks great on her .

SOLUTION: Synonym

PROBLEM: original sentence: The father carried the sleeping boy in his bassinet . paraphrase: The father cautiously carried the sleeping boy in his bassinet .

SOLUTION: Adverb

PROBLEM: original sentence: Three species of fish that have recently been found living in the Indian Ocean are being studied by scientists . They began two years ago . paraphrase: Three species of fish that have recently been found naturally living in the Indian Ocean are being carefully studied by scientists . They only began two years ago .

SOLUTION:
Adverb