With no explanation, label text_A→text_B with either "entailment", "neutral" or "contradiction".
text_A: Olvir was a prominent member of the court of King Harald Fairhair, who united Norway under his rule in the late early tenth century.
text_B: Olvir was a prominent member of the court of King Harald Fairhair, who united Norway under his rule in the late ninth or early tenth century.
neutral.