Information:  - Dimitra Liani ( Greek :   ; born 30 April 1955 ) is the third wife of former Greek Prime Minister Andreas Papandreou .  - Andreas Georgios Papandreou (; 5 February 1919  23 June 1996) was a Greek economist, a socialist politician and a dominant figure in Greek politics. The son of Georgios Papandreou, Andreas was a Harvard-trained academic. He served two terms as prime minister of Greece (21 October 1981 to 2 July 1989; and 13 October 1993 to 22 January 1996).  - The Prime Minister of the Hellenic Republic ("Prothypourgós tis Ellinikís Dimokratías"), colloquially referred to as the Prime Minister of Greece ("Prothypourgós tis Elládas"), is the head of government of the Hellenic Republic and the leader of the Greek cabinet. The incumbent prime minister is Alexis Tsipras, who took office on 21 September 2015.  - Georgios Papandreou ("Geórgios Papandréou"; 13 February 1888, in Kalentzi  1 November 1968, in Athens) was a Greek politician, the founder of the Papandreou political dynasty. He served three terms as prime minister of Greece (19441945, 1963, 19641965). He was also deputy prime minister from 19501952, in the governments of Nikolaos Plastiras and Sofoklis Venizelos and served numerous times as a cabinet minister, starting in 1923, in a political career that spanned more than five decades.    Given the information above, choose from the list below the object entity that exhibits the relation 'country of citizenship' with the subject 'dimitra liani'.  Choices: - academic  - athens  - greece  - politician
Answer:
greece