Pictures by Tobias Rehberger decorate the mayor's office You have to look closely to see the words that Frankfurt artist Tobias Rehberger has hidden in his five large-format oil paintings with graphic patterns and color gradients: "Yes" and "No". This seems fitting for the place where they are now hanging on loan - the office of Frankfurt Mayor Mike Josef (SPD). “It’s often about making decisions,” Josef said on Thursday. “The works of art will accompany me in the future.” Thanks to the pictures, he has...