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:
| name | class | navy | date joined | date departed |
| hms bluebell | flower class corvette | royal navy | 18 october | 21 october |
| hmcs elk | armed yacht | royal canadian navy | 5 october | 7 october |
| hms fowey | shoreham class sloop | royal navy | 18 october | 21 october |
| hms heartsease | flower class corvette | royal navy | 18 october | 21 october |
| hms leith | grimsby class sloop | royal navy | 18 october | 21 october |
| hms scarborough | hastings class sloop | royal navy | 5 october | 21 october |
Title:
order of battle for convoy sc 7
Statement:
hms bluebell , hms fowey , hms heartsease and hms leith all joined and departed on different dates
Answer:
refuted