With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Mao Zedong was Japanese.
text_B: Multitude  : War and Democracy in the Age of Empire is a book by post-marxist philosophers Antonio Negri and Michael Hardt , published in 2004 .. Michael Hardt. Michael Hardt. Antonio Negri. Antonio Negri. Empire. Empire ( Negri and Hardt book ). post-marxist. Post-Marxist. It is the second installment of a `` trilogy '' also comprising Empire -LRB- 2000 -RRB- and Commonwealth -LRB- 2009 -RRB- .. Empire. Empire ( Negri and Hardt book ). Commonwealth. Commonwealth ( book )
not_related.