. "Historical event" . . . . . . . . "oak" . . . "Boscobel Oak" . . . . . . . "Royal Oak, Michigan" . . "the oak tree" . "oak tree" . "tree in which" . . . . . . . . . . . "Elm tree" . "Royal Oak" . . "Oak" . "Charles' Oak" . . . . "Royal Oak" .