Karl-Liebknecht-Haus
Constructed in 1912 as a factory , the building was purchased by the Communist Party of Germany ( "Kommunistische Partei Deutschlands" , KPD ) in 1926 , became the seat of its Central Committee , and was named in honor of Karl Liebknecht , the KPD leader who was murdered by a paramilitary unit in January 1919 . 
<triplet> Karl Liebknecht <subj> Communist Party of Germany <obj> member of political party <subj> paramilitary unit <obj> killed by