CREATE TABLE Plays_games (StuID VARCHAR(255), GameID VARCHAR(255)); CREATE TABLE Student (lname VARCHAR(255), sex VARCHAR(255), StuID VARCHAR(255)); CREATE TABLE Video_games (GameID VARCHAR(255), Gname VARCHAR(255))
Find the last name and gender of the students who are playing both Call of Destiny and Works of Widenius games.
    
SQL: SELECT lname, sex FROM Student WHERE StuID IN (SELECT T1.StuID FROM Plays_games AS T1 JOIN Video_games AS T2 ON T1.GameID = T2.GameID WHERE T2.Gname = "Call of Destiny" INTERSECT SELECT T1.StuID FROM Plays_games AS T1 JOIN Video_games AS T2 ON T1.GameID = T2.GameID WHERE T2.Gname = "Works of Widenius")