A system and method for detecting preference expressions indicating evaluators’ likes and dislikes of a product from evaluations of the product and stores text describing evaluation of the product in association with an attribute of the text. The loading floor is adjustable between a retracted position and en extended position. The method further provides for configuring the first device and the second device for bidirectional data transmission, the bidirectional data transmission being conducted according to a network protocol, and transmitting bidirectional data between the first device and the second device via the media interface. A rigid fastening member including opposed end portions is positioned through the support plate for effectively securing the toilet seat to the toilet stool. The invention also provides expression vectors, host cells, antibodies, agonists, and antagonists. The method provides the organic light emitting diode display with improved reliability as a progressive dark defect is removed, and the lifetime and the white balance of the organic light emitting diode display is secured by executing an aging treatment of high luminance using a pixel circuit including an aging circuit for supplying the organic light emitting diode with an aging pulse.