A display apparatus includes a panel module, an assembly member, a glue layer, and a touch module. The smart card system includes a smart card payment processing facility for communicating with the smart card for automated payments of fares andor fees andor tolls. The ink cartridge is formed with two grooves open to the front and lower surfaces of the ink cartridge at positions that correspond to the protruding wall and the optical sensor. The other of the pair of filters makes an association based upon the probability that a newly detected dynamic object is a previously detected dynamic object. The adjustable electronic component may be coupled to the antenna resonating element or other structures in the antenna or may form part of the impedance matching circuit, a transmission line, a parasitic antenna element, or other antenna structures. An automated training routine is provided that includes learning a proper mapping from the natural language question to one or more structured queries by discovering and summarizing parallel semantics between a knowledge base and pairs of a natural language question and its answer.