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.

original sentence: Paul tried to call George on the phone , but he wasn't successful . paraphrase: Anna tried to call Lily on the phone , but she wasn't successful .
Gender

original sentence: The painting in Mark's living room shows an oak tree . it is to the right of a house . paraphrase: The paintings in Mark's living room show oak trees . They are to the right of a house .
Number

original sentence: The man lifted the boy onto his shoulders . paraphrase: The boy was lifted by the man onto his shoulders .

Voice