With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Margaret of Valois wrote memoirs.
text_B: Spergularia is a genus in the Caryophyllaceae family , containing salt-tolerant plants known as sandspurrys and sea-spurreys .. genus. genus. Caryophyllaceae. Caryophyllaceae. There are about 60 species .
not_related.