-- label the training data as "training-hash-4B":
|abc list> => |abc 1> + |abc 2> + |abc 3> + |abc 4> + |abc 5> + |abc 6> + |abc 7> + |abc 8> + |abc 9> + |abc 10>
|adelaidenow list> => |adelaidenow 1> + |adelaidenow 2> + |adelaidenow 3> + |adelaidenow 4> + |adelaidenow 5> + |adelaidenow 6> + |adelaidenow 7> + |adelaidenow 8> + |adelaidenow 9> + |adelaidenow 10>
|slashdot list> => |slashdot 1> + |slashdot 2> + |slashdot 3> + |slashdot 4> + |slashdot 5> + |slashdot 6> + |slashdot 7> + |slashdot 8> + |slashdot 9> + |slashdot 10>
|smh list> => |smh 1> + |smh 2> + |smh 3> + |smh 4> + |smh 5> + |smh 6> + |smh 7> + |smh 8> + |smh 9> + |smh 10>
|wikipedia list> => |wikipedia 1> + |wikipedia 2> + |wikipedia 3> + |wikipedia 4> + |wikipedia 5> + |wikipedia 6> + |wikipedia 7> + |wikipedia 8> + |wikipedia 9> + |wikipedia 10>
|youtube list> => |youtube 1> + |youtube 2> + |youtube 3> + |youtube 4> + |youtube 5> + |youtube 6> + |youtube 7> + |youtube 8> + |youtube 9> + |youtube 10>

|null> => map[hash-4B,training-hash-4B] "" |abc list> + "" |adelaidenow list> + "" |slashdot list> + "" |smh list> + "" |wikipedia list> + "" |youtube list>