With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ayutthaya was friendly towards Chinese, Dutch, English, Vietnamese, Indian, Japanese, Persian, Portuguese, Spanish, and French people.
text_B: In set theory , the ground axiom was introduced by and .. It states that the universe is not a nontrivial set forcing extension of an inner model .. forcing. Forcing ( mathematics ). inner model. inner model
not_related.