instruction:
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.
question:
original sentence: Bob paid for Charlie's college education . He is very grateful . paraphrase: Jane paid for Anne's college education . She is very grateful .
answer:
Gender


question:
original sentence: Tom said "Check" to Ralph as he moved his bishop . paraphrase: Tom and Luke said "Check" to Ralph and Henry as they moved their bishop .
answer:
Number


question:
original sentence: There is a pillar between me and the stage , and I can't see around it . paraphrase: There are pillars between me and the stages , and I can't see around them .
answer:

Number