A nickel grid is arranged on the fuel-gas side of the high-temperature fuel cell, between the bipolar plate and the solid electrolyte. The terminal device acquires contents information of the audio-visual content based on the part of the audio-visual content. The table of modified commands is used to generate a translation table for each device. In various examples described herein, priorities can be computed for composite events such that relative priorities of composite events are higher if the constituent atomic events of the composite events have higher priorities, such that the relative priority of a composite event is greater than the priority of any subset of its events, andor according to any other suitable criteria.