With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Nile drains through South Sudan and it has an Arabic name.
text_B: Ras association domain-containing protein 9 -LRB- RASSF9 -RRB- , also known as PAM COOH-terminal interactor protein 1 -LRB- PCIP1 -RRB- or peptidylglycine alpha-amidating monooxygenase COOH-terminal interactor -LRB- PAMCI -RRB- is a protein that in humans is encoded by the RASSF9 gene .. protein. protein. gene. gene
not_related.