Information: - In consumer electronics, a remote control is a component of an electronic device such as a television set, DVD player, or other home appliance, used to operate the device wirelessly from a short distance. Remote control is primarily a convenience feature for the consumer, and can allow operation of devices that are out of convenient reach for direct operation of controls. In some cases, remote controls allow a person to operate a device that they otherwise would not be able to reach, as when a garage door opener is triggered from outside or when a Digital Light Processing projector that is mounted on a high ceiling is controlled by a person from the floor level. - Sojka III is an unmanned aerial vehicle ( UAV ) operated by the Czech Army until it was decommissioned in December 2011 . - An unmanned aerial vehicle (UAV), commonly known as a drone, unmanned aircraft system (UAS), or by several other names, is an aircraft without a human pilot aboard. The flight of UAVs may operate with various degrees of autonomy: either under remote control by a human operator, or fully or intermittently autonomously, by onboard computers.<ref name="ICAO's circular 328 AN/190"></ref> After reading the paragraphs above, we are interested in knowing the entity with which 'sojka iii' exhibits the relationship of 'subclass of'. Find the answer from the choices below. Choices: - aircraft - ceiling - consumer electronics - digital - distance - dvd - dvd player - electronics - feature - flight - home - home appliance - human - light - name - out - vehicle
A:
aircraft