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Find a Wikipedia image that answers this question: What two letters are on the top of the tower to the left of the entrance to the Berlin Hauptbahnhof train station?

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Represent the given Wikipedia image with related text information: Berlin Hauptbahnhof, Ansicht vom Washingtonplatz.

['<|image_1|>\nRepresent the given Wikipedia image with related text information: East Berlin 1967, Alexanderplatz.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Berlin, Kreuzberg, Moeckernstrasse 135-141, Postamt SW 11 The former Post Office SW at Mockernstrae 135-138, corner of Hallesche Strae (on the right), in Berlin-Kreuzberg. It was built from 1933 to 1937 in two parts to designs by the architekts Kurt Kuhlow and Georg Werner. It has been designated a historic landmark.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: 0106-01b DTMB Exterior construction, German Museum of Technology Berlin, Trebbinerstrae 9, 10963 Berlin, C. Kirchner, DTMB.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Berlin, Altes Museum -- 2013 -- 4531 Altes Museum, Berlin, Germany.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: 2009-10-23 - Festival of Lights - Fernsehturm 2  Fernsehturm Berlin during the Festival of Lights.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Frankfurt EZB-Neubau.20130909 ECB construction site with the twin tower and the historic market hall in the foreground. Some of the Frankfurt high-rises can be seen in the background (September 2013).\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Berlin, Germany (April 2016) - 098  Berlin, Germany (April 2016).\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Zurich town hall, 8001 Zürich, Switzerland - panoramio (4).\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Olympic-Stadium-Berlin-2009-06-28 Inside Olympic Stadium (Berlin). You can see the Glockenturm in the background.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: Alexanderplatz tower at night.\n', '<|image_1|>\nRepresent the given Wikipedia image with related text information: The roof of the Reichstag building in Berlin.\n']
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