With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The House of Lusignan ruled none of Europe.
text_B: Technical Gymnasium Christiansbjerg -LRB- ; TGC -RRB- is a 3-year technical exam -LRB- HTX -RRB- i Aarhus , Denmark .. Aarhus. Aarhus. Denmark. Denmark. Christiansbjerg. Christiansbjerg. The school was founded as Technical Gymnasium Risskov in the Aarhus ' suburb Risskov , but was moved to Christiansbjerg in 2002 .. Aarhus. Aarhus. Risskov. Risskov. Christiansbjerg. Christiansbjerg. It is a part of AARHUS TECH .. AARHUS TECH. Aarhus tech
not_related.