With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Lisbon is in the Castillo district of Portugal.
text_B: fpGUI , the Free Pascal GUI toolkit , is a cross-platform graphical user interface toolkit developed by Graeme Geldenhuys .. GUI. graphical user interface. cross-platform. cross-platform. Free Pascal. Free Pascal. fpGUI is open source and free software , licensed under a Modified LGPL license .. LGPL. GNU Lesser General Public License. open source. open source software. free software. free software. The toolkit has been implemented using the Free Pascal compiler , meaning it is written in the Object Pascal language .. Object Pascal. Object Pascal. Free Pascal. Free Pascal. fpGUI consists only of graphical widgets or components , and a cross-platform 2D drawing library .. cross-platform. cross-platform. widgets. Widget ( computing ). It does n't implement database layers , 3D graphics , XML parsers etc. .. It also does n't rely on any huge third party libraries like GTK or Qt .. All the extras come straight from what is available with the Free Pascal Component Library -LRB- FCL -RRB- which comes standard with the Free Pascal compiler .. Free Pascal. Free Pascal
not_related.