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What’s your English teacher like How is your English teacher like What does your English teacher like What does your English teacher look like
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so Liu Xiang does so is Liu Xiang so does Liu Xiang so Liu Xiang is
SELECT Sname FROM S,SC,C WHERE S.Sno=SC.Sno AND SC.Cno=C.Cno AND Teacher=‘LIU’AND Ssex=‘F’ SELECT Sname FROM S WHERE Ssex=‘F’AND Sno IN (SELECT Sno FROM SC WHERE Cno IN(SELECT Cno FROM C WHERE Teacher=‘LIU’)) SELECT Sname FROM S WHERE Ssex=‘F’AND EXISTS( SELECT * FROM SC WHERE SC.Sno=S.Sno AND EXISTS (SELECT * FROM C WHERE Teacher=‘LIU’)) SELECT Sname FROM S WHERE Ssex=‘F’AND EXISTS( SELECT * FROM SC WHERE SC Sno=S Sno AND EXISTS (SELECT * FROM C WHERE C.Cno=SC.Cno AND Teacher=‘LIU’))
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enter the teacher of English and head teacher enters the teacher of English and head teacher does the teacher of English and head teacher the teacher of English and head teacher enter