Give you a statement and table with its title in Markdown format, please determine whether the statement is supported or refuted by, or is unrelated to the table. It'a binary classification problem, you should choose the answer between supported and refuted. 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 | 2124 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 |
Title:
medieval bulgarian army
Statement:
there were 3 battle where the bulgarian commander was unknown
Answer:
supported