When a request having a keyword is received, a domain name having the keyword can be generated and a network resource corresponding to the domain name can be requested wherein the network resource is adapted to extract the keyword from the domain name. The lever includes: a basal portion disposed on a vertex of the contact; and an operating portion being swingable in swing directions and being depressible toward the switch from a predetermined position on a swing path. Due to common mode feedback, no output gate bias is needed. The GUVs that are formed may be incorporated into an artificial cell based biosensor. In one example, the guidewire outer diameter is small enough such that an intravascular catheter can be passed over the guidewire. Having received the photographbar code sheet, the patient moves to the reception and submits the photographbar code sheet and a health insurance card to an attendant at the reception.