With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Divergent Series: Allegiant is horror.
text_B: The Antiproton Decelerator -LRB- AD -RRB- is a storage ring at the CERN laboratory near Geneva .. storage ring. storage ring. CERN. CERN. Geneva. Geneva. It was built as a successor to the Low Energy Antiproton Ring -LRB- LEAR -RRB- and started operation in the year 2000 .. Low Energy Antiproton Ring. Low Energy Antiproton Ring. Antiprotons are created by impinging a proton beam from the Proton Synchrotron on a metal target .. Antiprotons. Antiprotons. Proton Synchrotron. Proton Synchrotron. The AD decelerates the resultant antiprotons to an energy of 5.3 MeV , which are then ejected to one of several connected experiments .
not_related.