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.

Example Input: original sentence: Fred and Alice had very warm down coats , but they were not prepared for the cold in Alaska . paraphrase: Fred and Alice have very warm down coats , but they are not prepared for the cold in Alaska .
Example Output: Tense

Example Input: original sentence: If the con artist had succeeded in fooling Sam , he would have gotten a lot of money . paraphrase: If the con artist had succeeded in fooling Joan , she would have gotten a lot of money .
Example Output: Gender

Example Input: original sentence: John was doing research in the library when he heard a man humming and whistling . He was very annoying . paraphrase: John was quietly doing research in the library when he suddenly heard a man humming and whistling . He was very annoying .
Example Output:
Adverb