With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Boston was founded in the 17th century.
text_B: Correlation Ventures is a venture capital firm based in the United States with about US$ 330 million under management .. venture capital. venture capital. United States. United States. The firm engages in investments only in the United States , does not take board seats , makes decisions within two weeks , and always `` co-invests '' with other investors rather than being the sole investor .. United States. United States
not_related.