Dodo V.S. Chancellor

When I visited Berlin last Oct, friend took me to the square and introduced the building to me. "See that building, that's the Chancellor's house." "Oh..What's so special about it?" "Well, it's where the Chancellor works." "Oh, who's Chancellor?" "Urh...he's like prime minister of Germany." "Oh...wait a minite. That's not logical. Why you call it Chancellor's house? If he's not elected next time, you'll have to change the house's name to the new prime minister's name. Like Johnson's house, if Johnson got elected." " Dodo, do you really understand what "Chancellor" means?" "Urh..you told me it's your prime minister's name, right?" "Well...yes, it means prime minister in Germany. Not the Prime minister's Name." "Oh...Oh...":P