text: Create table If Not Exists Follow (followee varchar(255), follower varchar(255));
  Truncate table Follow;
  insert into Follow (followee, follower) values ('Alice', 'Bob');
  insert into Follow (followee, follower) values ('Bob', 'Cena');
  insert into Follow (followee, follower) values ('Bob', 'Donald');
  insert into Follow (followee, follower) values ('Donald', 'Edward');
  