Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Camp | Place | Province | Location | Period |
| --- | --- | --- | --- | --- |
| 10 | Chatham | Ontario | 260 km southwest of Toronto | 1944 1945-1946 |
| 10 | Fingal | Ontario | 40km south of London | 1945-1946 |
| 20 (C) | Gravenhurst | Ontario | 170km north of Toronto | 1940-1946 |
| 21 (F) | Espanola | Ontario | 330km NNW of Toronto | 1940-1943 |
| 22 (M) | Mimico | Ontario | 15km west of Toronto | 1940-1944 |
| 23 (Q) | Monteith (near Iroquois Falls ) | Ontario | 700km north of Toronto | 1940-1946 |
| 30 | Bowmanville | Ontario | 65km ENE of Toronto | 1941-1945 |
| 31 (F) | Kingston | Ontario | 145km SSW of Ottawa | 1940-1943 |
| 32 (H) | Hull | Quebec | 10km north of Ottawa | 1941-(?) |
| 33 (F) | Petawawa | Ontario | 130km WNW of Ottawa | 1942-1946 |
| 40 (A) | Farnham | Quebec | 50km ESE of Montreal | 1940-1941 1942-1943 1944-1946 |
| 42 (N) | Newington ( Sherbrooke ) | Quebec | 130km east of Montreal | 1942-1946 |
| 44 | Feller College / Grande Ligne | Quebec | 275km northeast of Montreal | 1943-1946 |
| 45 | Sorel | Quebec | 65km NNE of Montreal | 1945-1946 |
| 70 (B) | Fredericton (Ripples) | New Brunswick | 20 km east of Fredericton | 1941-1945 |
| 100 (W) | Neys | Ontario | 1100km northwest of Toronto | 1944-1943 1944-1946 |
| 101 | Angler | Ontario | 800km northwest of Toronto | 1941-1946 |
| 130 | Seebe | Alberta | 100km west of Calgary | 1939-1946 |
| 132 | Medicine Hat | Alberta | 260km ESE of Calgary | 1943-1945 |
| 133 | Ozada | Alberta | 130km west of Calgary | 1942 |
| 133 | Lethbridge | Alberta | 160km southeast of Calgary | 1942-1946 |
| 135 | Wainwright | Alberta | 190km ESE of Edmonton | 1945-1946 |
| (R) | Red Rock | Ontario | Lake Superior | 1940-1941 |
| N/A | Wainfleet | Ontario | Close to Port Colborne | 1943-1945 |
Question:
Tell me the period for red rock
Answer:
1940-1941