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 WHFRF Teacher=’LIU’)) SELECT Sname FROM S WHERE Ssex=’F’ AND EXISTS(SELECT* FROM SC WHERE SC.Sno=S.Sno AND EXISTS