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: If the con artist had succeeded in fooling Sam , he would have lost a lot of money . paraphrase: If the con artists had succeeded in fooling Sam and Julian , they would have lost a lot of money .

Answer: Number


Question: original sentence: I couldn't find a spoon , so I tried using a pen to stir my coffee . But that turned out to be a bad idea , because it got full of coffee . paraphrase: I couldn't find spoons , so I tried using pens to stir my coffees . But that turned out to be a bad idea , because they got full of coffee .

Answer: Number


Question: original sentence: The painting in Mark's living room shows an oak tree . it is to the right of a house . paraphrase: The painting in Mark's living room showed an oak tree . it was to the right of the house .

Answer:
Tense