Hätte die Post Sinne (und Verstand!), würde sie doch reagieren auf 4500 Unterschriften zur Wiederaufstellung eines abgeschraubten Briefkastens.
had the post senses (and common sense) would she Prt react to 4500 signatures to-the putting up again of-one unscrewed postbox
If the post had senses (and common sense!), it would react to 4500 signatures demanding that a single postbox that was removed be put up again.