Introduction':['name','education', 'sex']*3, 'Message': ['Sulie', 'master', 'male', 'LuBan', 'Bachelor...= rep(c("name", "education", "sex"), times = 3), Message = c("Sulie", "master", "male", "LuBan", "Bachelor...'name':['SuLie', 'LuBan', 'ZhenJI'], 'sex':['male', 'male', 'female'], 'education':['master','Bachelor...name = c("SuLie", "LuBan", "ZhenJi"), sex = c("male", "male", "female"), education = c("master", "Bachelor