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:
| usage | class | performance | performance test | particulate size approaching 100% retention | test standard |
| primary filters | g1 | 65% | average value | >5µm | bs en779 |
| primary filters | g2 | 65 - 80% | average value | >5µm | bs en779 |
| primary filters | g3 | 80 - 90% | average value | >5µm | bs en779 |
| primary filters | g4 | 90% - | average value | >5µm | bs en779 |
| secondary filters | f5 | 40 - 60% | average value | >5µm | bs en779 |
| secondary filters | f6 | 60 - 80% | average value | >2µm | bs en779 |
| secondary filters | f7 | 80 - 90% | average value | >2µm | bs en779 |
| secondary filters | f8 | 90 - 95% | average value | >1µm | bs en779 |
| secondary filters | f9 | 95% - | average value | >1µm | bs en779 |
| semi hepa | h10 | 85% | minimum value | >1µm | bs en1822 |
| semi hepa | h11 | 95% | minimum value | >0.5µm | bs en1822 |
| semi hepa | h12 | 99.5% | minimum value | >0.5µm | bs en1822 |
| hepa | h13 | 99.95% | minimum value | >0.3µm | bs en1822 |
| hepa | h14 | 99.995% | minimum value | >0.3µm | bs en1822 |
Title:
none
Statement:
class f5 uses secondary filters on the standard test bs en779
Answer:
supported