The present invention relates to a system and methodology for controlling and presenting information to users in an automated manner. The piston body has a chute which is axially disposed on an outer surface of the piston body. The demultiplexed signal lights output from the output ports thereof have a plurality of wavelength components, respectively, and any three wavelength components, fa, fb, and fd, that satisfy the following conditions: fa<fb<fd; and fdfaNf have the following relationship: 2fbfafd where N represents an integer, and f represents each of the predetermined frequency intervals. The casing has a first casing portion that is fixed to the first front and rear throttle bodies, and a second casing portion that faces the first casing portion in a width direction and is fixed to at least one of the second front and rear throttle bodies. The policy engine platform is the central point for interacting with the policy for the services and the kernel components that actually perform the services.