| http://www.w3.org/ns/prov#value | - Since the data and information pertaining to a tenant, the system location and other information can be stored in a memory circuit such as data stored in the command memory circuit 72C shown in FIG. 10, the information and data can be transferred to the E concierge station automatically, and a display screen in front of the operator of the E concierge station can display all necessary information,
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