| http://www.w3.org/ns/prov#value | - The interrogation systems include multiple interrogators (designated ???INT???) with corresponding antennas (designated ???ANT???) that define an active area for detecting, without limitation, RFID objects (e.g., objects such as a sponge with an RFID tag attached thereto), metal objects (e.g., objects including metal), and bar coded objects (e.g., objects such as a blood bag with a bar code thereo
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