| http://www.w3.org/ns/prov#value | - The marker can be pre-printed with a bar code or other optical information, it can be a pre-shaped or pre-colored marker, or it can be a pre-configured intelligent marker such as an RFID tag with pre-stored identification data. [0053] In one embodiment, markers are provided to the user by an entity that provides the seed for a crop.
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