With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Marie Curie took up studying while Warsaw was beneath the rule of the Russian Empire.
text_B: Forkhead box D3 also known as FOXD3 is a forkhead protein that in humans is encoded by the FOXD3 gene .. forkhead protein. FOX proteins
not_related.