Complex sentence: In 1912, plans were approved for AEG to build its own north-south underground line, named the after its termini, Gesundbrunnen and Neukölln, via Alexanderplatz.
Split into simpler sentences: In 1912, plans were approved for AEG to build its own north-south underground line. Named the after its termini, it was to connect Gesundbrunnen and Neukölln, via Alexanderplatz.