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.
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Question: original sentence: Joe's uncle can still beat him at tennis , even though he is 30 years older . paraphrase: Lucy's aunt can still beat her at tennis , even though she is 30 years older .

Answer: Gender


Question: original sentence: Archaeologists have concluded that humans lived in Laputa 20,000 years ago . They hunted for deer on the river banks . paraphrase: Archaeologists are concluding that humans lived in Laputa 20,000 years ago . They were hunting for deer on the river banks .

Answer: Tense


Question: original sentence: Fred watched TV while George went out to buy groceries . After an hour he got up . paraphrase: Mary watched TV while Lily went out to buy groceries . After an hour she got up .

Answer:
Gender