What's Mine's Mine, Complete

The room was handsomely furnished, but such as I would quarrel with none for calling common, for it certainly was uninteresting. Not a thing in it had to do with genuine individual choice, but merely with the fashion and custom of the class to which its occupiers belonged. It was a dining-room, of good size, appointed with all the things a dining-room "ought" to have, mostly new, and entirely expensive-mirrored sideboard in oak; heavy chairs, just the dozen, in fawn-coloured morocco seats and backs-the dining-room, in short, of a London-house inhabited by rich middle-class people. A big fire blazed in the low round-backed grate, whose flashes were reflected in the steel fender and the ugly fire-irons that were never used. A snowy cloth of linen, finer than ordinary, for there was pride in the housekeeping, covered the large dining-table, and a company, evidently a family, was eating its breakfast. But how come these people THERE?