Question: Can you please tell me who the friends of Alice's friends are?
SQL: SELECT DISTINCT T4.name FROM PersonFriend AS T1 JOIN Person AS T2 ON T1.name   =   T2.name JOIN PersonFriend AS T3 ON T1.friend   =   T3.name JOIN PersonFriend AS T4 ON T3.friend   =   T4.name WHERE T2.name   =   'Alice' AND T4.name ! =  'Alice'