| http://www.w3.org/ns/prov#value | - In recent years, there have been increasingly widespread digital devices (camcorder, digital still camera, camera-equipped mobile phone, and so on) capable of recording and storing an image (video) taken and a sound (audio) as digital data in an optical disk such as a DVD and Blu-ray (registered trademark), magnetic disk such as a hard disk drive, and recording medium such as a semiconductor memor
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