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: 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 ink . paraphrase: I can't find a spoon , so I am trying to use a pen to stir my coffee . But that turns out to be a bad idea , because it gets full of ink .

Answer: Tense


Question: original sentence: Dan took the rear seat while Bill claimed the front because his "Dibs!" was quicker . paraphrase: Dan is taking the rear seat while Bill is claiming the front because his "Dibs!" is quicker .

Answer: Tense


Question: original sentence: The cat was lying by the mouse hole waiting for the mouse , but it was too cautious . paraphrase: The cat was patiently lying by the mouse hole waiting for the mouse , but it was too cautious .

Answer:
Adverb