With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: World War I is also known as the War to End All Wars.
text_B: Tembesi River is a river in northern Sumatra , Indonesia .. Sumatra. Sumatra. Indonesia. Indonesia. It is a tributary of the Batang Hari River .. Batang Hari River. Batang Hari River. Tributaries include the Merargin River .. Merargin River. Merargin River
not_related.