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:
| Battle | Date | Bulgarian Commander | Byzantine Commander | Result |
| --- | --- | --- | --- | --- |
| Battle of Ongal | 680 | Asparukh | Constantine IV | Bulgarian victory |
| Battle of Anchialus | 708 | Tervel | Justinian II | Bulgarian victory |
| Battle of Marcellae | 756 | Vinekh | Constantine V | Byzantine victory |
| Battle of the Rishki Pass | 759 | Vinekh | Constantine V | Bulgarian victory |
| Battle of Anchialus | 30 June 763 | Telets | Constantine V | Byzantine victory |
| Battle of Berzitia | October 774 | Unknown | Unknown | Byzantine victory |
| Battle of Marcellae | 792 | Kardam | Constantine VI | Bulgarian victory |
| Siege of Serdica | Spring 809 | Krum | Unknown | Bulgarian victory |
| Battle of Pliska | 26 July 811 | Krum | Nicephorus I | Bulgarian victory |
| Battle of Versinikia | 22 June 813 | Krum | Michael I Rangabe | Bulgarian victory |
| Siege of Adrianople | 813 | Krum | Unknown | Bulgarian victory |
| Battle of Boulgarophygon | Summer 896 | Simeon I | Unknown | Bulgarian victory |
| Battle of Anchialus | 20 August 917 | Simeon I | Leo Phokas | Bulgarian victory |
| Battle of Katasyrtai | August 917 | Simeon I | Leo Phokas | Bulgarian victory |
| Battle of Pegae | March 922 | Theodore Sigritsa | Pothos Argyros | Bulgarian victory |
| Battle of the Gates of Trajan | 16 July 986 | Samuil | Basil II | Bulgarian victory |
| Battle of Salonica | Summer 996 | Samuil | Gregory Taronites | Bulgarian victory |
| Battle of Spercheios | 16 July 996 | Samuil | Nikephoros Ouranos | Byzantine victory |
| Battle of Skopie | 1004 | Samuil | Basil II | Byzantine victory |
| Battle of Kreta | 1009 | Samuil | Basil II | Byzantine victory |
| Battle of Thessalonica | July 1014 | Nestoritsa | Theophylact Botaneiates | Byzantine victory |
| Battle of Kleidion | 29 July 1014 | Samuil | Basil II | Byzantine victory |
| Battle of Strumitsa | August 1014 | Gavril Radomir | Theophylact Botaneiates | Bulgarian victory |
| Battle of Bitola | Autumn 1015 | Ivats | George Gonitsiates | Bulgarian victory |
| Battle of Setina | Autumn 1017 | Ivan Vladislav | Basil II | Byzantine victory |
| Battle of Dyrrhachium | February, 1018 | Ivan Vladislav | Niketas Pegonites | Byzantine victory |
| Battle of Thessalonica | 1040 | Peter II Delyan | Michael IV | Bulgarian victory |
| Battle of Thessalonica | Autumn 1040 | Alusian | Unknown | Byzantine victory |
| Battle of Ostrovo | 1041 | Peter II Delyan | Michael IV | Byzantine victory |
| Siege of Lovech | Spring 1190 | Unknown | Isaac II Angelos | Bulgarian victory |
| Battle of Tryavna | Spring 1190 | Ivan Asen I | Isaac II Angelos | Bulgarian victory |
| Battle of Arcadiopolis | 1194 | Ivan Asen I | Basil Vatatzes | Bulgarian victory |
| Battle of Serres | 1196 | Ivan Asen I | Isaac | Bulgarian victory |
| Siege of Varna | 21–24 March 1201 | Kaloyan | Unknown | Bulgarian victory |
| Battle of Klokotnitsa | 9 March 1230 | Ivan Asen II | Theodore Komnenos | Bulgarian victory |
| Battle of Adrianople | 1254 | Unknown | Unknown | Byzantine victory |
| Battle of Devina | 17 July 1279 | Ivailo | Murin | Bulgarian victory |
| Battle of Skafida | 1304 | Theodore Svetoslav | Michael IX | Bulgarian victory |
| Battle of Rusokastro | 18 July 1332 | Ivan Alexander | Andronikos III | Bulgarian victory |
Question:
What is the Byzantine Commander with a Bulgarian Victory at the Siege of Lovech?
Answer:
Isaac II Angelos