Premise: The great gate at the main entrance was built in 1628 and became notorious as the site where a robber named Goemon Ishikawa was boiled alive in an iron cauldron while holding his son aloft to save him from the same fate.

Hypothesis: The great gate at the main entrance was built in 1600 and was the site where Goemon Ishikawa and his son were boiled alive.
Relation: contradiction