With no explanation, label text_A→text_B with either "entailment", "neutral" or "contradiction".
text_A: He initially was a sort of author surrogate or alter ego for writer Steve Gerber, though Gerber is also shown to exist in the Marvel Universe.
text_B: He initially was a sort of alter ego for writer Steve Gerber, though Gerber is also shown to exist in the Marvel Universe.
entailment.