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 | Wins | Start | Duration | Defeated by |
| --- | --- | --- | --- | --- |
| Sakumayama | 27.0 | 2nd day July 2011 | 6 months 12 days | Senshō |
| Itai | 26.0 | 1st day November 1978 | 6 months 10 days | Ōnishiki |
| Tochiazuma II | 26.0 | 8th day January 1995 | 7 months 29 days | Dewaarashi |
| Tokitenkū | 22.0 | 1st day September 2002 | 6 months 2 days | Furuichi |
| Kototenta | 21.0 | 1st day January 1986 | 6 months 0 days | retired |
Question:
Which duration was defeated by retired?
Answer:
6 months 0 days