why would you call this impossible if you give people 12 minutes to do it? they have time to google every answer if they don't knoweven on pause and even if they're typing one letter per 10 seconds in the google search, they'd still pass. also this is not only easy, it's incorrect.
Wailord-877.4lbs/398 kgs
Groudon-2094.4lbs/950kgs
https://www.serebii.net/pokedex-xy/321.shtml
https://www.serebii.net/pokedex-xy/383.shtml