Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Father | Birth | Marriage | Became Queen | Ceased to be Queen | Death | Spouse |
| --- | --- | --- | --- | --- | --- | --- |
| Otto II, Margrave of Meissen | 1160+ | 1178 | 1198 | 1199 | 2 Feb 1211 | Ottokar I |
| Béla III of Hungary | 1181 | 1199 | 1199 | 1230 | 6 Dec 1240 | Ottokar I |
| Philip of Swabia | 1200 | 1224 | 1230 | 13 Sep 1248 | 13 Sep 1248 | Wenceslaus I |
| Leopold VI, Duke of Austria | 1204 | Feb 1252 | 1253 | 1260 divorced | 29 Oct 1266 | Ottokar II |
| Rostislav of Slavonia | 1245 | 25 Oct 1261 | 25 Oct 1261 | 1278 | 9 Sep 1285 | Ottokar II |
| Rudolf I of Habsburg | 13 Mar 1271 | 24 Jan 1285' | 24 Jan 1285' | 18 Jun 1297 | 18 Jun 1297 | Wenceslaus II |
| Przemysl II of Poland | 1 Sep 1286 | 1300 | 1303 | 1305 | 18 October 1335 | Wenceslaus II |
| Mieszko I, Duke of Teschen | c. 1290 | 1305 | 1305 | 1306 | 21 September 1317 | Wenceslaus III |
Question:
When did the person who died on 6 Dec 1240 get married?
Answer:
1199.0