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:
| Unnamed: 0 | date | vs | opponent | score | attendance | record |
| 1 | january 5 , 1991 | at | detroit turbos | 8 - 18 | 6847 | loss |
| 2 | january 11 , 1991 | vs | new england blazers | 11 - 10 | 14789 | win |
| 3 | january 19 , 1991 | at | new york saints | 13 - 19 | 9081 | loss |
| 4 | january 26 , 1991 | vs | new york saints | 13 - 8 | 16282 | win |
| 5 | february 10 , 1991 | vs | detroit turbos | 12 - 14 | 16642 | loss |
| 6 | february 22 , 1991 | at | new england blazers | 11 - 13 | 7095 | loss |
| 7 | february 28 , 1991 | vs | pittsburgh bulls | 11 - 9 | 13712 | win |
| 8 | march 9 , 1991 | at | pittsburgh bulls | 15 - 7 | 8589 | win |
| 9 | march 17 , 1991 | vs | baltimore thunder | 14 - 17 | 16289 | loss |
Title:
none
Statement:
on february 28 , 1991 the opponent was the pittsburgh bulls
Answer:
supported