Gender    Name    Salary  Id   MentorID
M     Pourush      40000   1      2
M      Avinash    60000    2     Null
F      Surbhi     60000    3     Null
F      Kamakshi    40000   4      3
F      Ramya      60000     5    Null
F      Ritu        40000    6     5

SELECT e1.Name, e1.MentorId
FROM Employee as e1, LEFT JOIN  Employee as e2
ON e2.Id<>e1.Id WHERE
e2.Name LIKE 'Avinash' AND
e2.Name LIKE 'Surbhi'
AND e2.Name LIKE 'Ramya'