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:
| Name of System | Location | Traction Type | Date (From) | Date (To) |
| --- | --- | --- | --- | --- |
| Nova Scotia Light and Power Company, Ltd | Halifax | Horse | 11 Jun 1866 21 Oct 1886 | 17 May 1876 31 May 1896 |
| Nova Scotia Light and Power Company, Ltd | Halifax | Electric | 12 Feb 1896 | 29 Apr 1949 |
| Pictou County Electric Company | New Glasgow - Trenton | Electric | 10 Oct 1904 | 7 May 1931 |
| Cape Breton Electric Company | Sydney | Electric | 1901 | Oct 1931 |
| Cape Breton Electric Company | ? North Sydney | Electric | 1903 | 1929 |
| Cape Breton Tramways Company, Ltd. | ? Glace Bay | Electric | 7 Jan 1908 | 1938 |
| Cape Breton Tramways Company, Ltd. | ? Sydney - Glace Bay | Electric | Oct 1902 | 15 May 1947 |
| Yarmouth Light and Power Company | Yarmouth | Electric | 26 Aug 1892 | 20 Oct 1928 |
Question:
What is the date (to) associated wiht a traction type of electric and the Yarmouth Light and Power Company system?
Answer:
20 Oct 1928