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: Bob paid for Charlie's college education , but now Charlie acts as though it never happened . He is very ungrateful . paraphrase: Jane paid for Anne's college education , but now Anne acts as though it never happened . She is very ungrateful .
Example Output: Gender

Example Input: original sentence: Fred watched TV while George went out to buy groceries . After an hour he got back . paraphrase: TV was watched by Fred while George went out to buy groceries . After an hour he got back .
Example Output: Voice

Example Input: original sentence: This morning , Joey built a sand castle on the beach , and put a toy flag in the highest tower , but this afternoon the wind knocked it down . paraphrase: This morning , Joey cheerfully built a sand castle on the beach , and elegantly put a toy flag in the highest tower , but this afternoon the wind fiercely knocked it down .
Example Output:
Adverb