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:
| date | round | opponent | venue | result | attendance |
| 16 september 1970 | r1 | aris salonika | a | 1 - 1 | 50000 |
| 30 september 1970 | r1 | aris salonika | h | 5 - 1 | 40425 |
| 21 october 1970 | r2 | cska sofia | a | 1 - 0 | 45000 |
| 4 november 1970 | r2 | cska sofia | h | 1 - 0 | 41613 |
| 10 march 1971 | qf | club brugge | a | 0 - 2 | 23000 |
| 24 march 1971 | qf | club brugge | h | 4 - 0 ( aet ) | 45558 |
| 14 april 1971 | sf | manchester city | h | 1 - 0 | 45595 |
| 28 april 1971 | sf | manchester city | a | 1 - 0 | 43663 |
| 19 may 1971 | f | real madrid | n | 1 - 1 ( aet ) | 45000 |
| 21 may 1971 | f | real madrid | n | 2 - 1 | 24000 |
Title:
1970 - 71 chelsea f.c. season
Statement:
r2 is the round in which the opponent is cska sofia in venue a
Answer:
supported