Prime Meridian

Target entity: Prime Meridian
Context triple: [GMT, referenceMeridian, Prime Meridian]

• A. San Bernardino meridian
  The San Bernardino meridian is a principal survey meridian used as a reference line for land surveying and mapping in Southern California and parts of Nevada.
• B. Greenwich Mean Time
  Greenwich Mean Time is the mean solar time at the Royal Observatory in Greenwich, London, historically used as the world’s primary reference for timekeeping and the basis for Coordinated Universal Time (UTC).
• C. Tropic of Cancer
  The Tropic of Cancer is the northernmost latitude on Earth where the sun can appear directly overhead, marking the boundary of the tropical zone in the Northern Hemisphere.
• D. Equator
  The Equator is an imaginary line encircling the Earth at equal distance from the poles, dividing the planet into Northern and Southern Hemispheres and marking 0° latitude.
• E. Tropic of Capricorn
  The Tropic of Capricorn is the southernmost latitude where the sun can appear directly overhead, marking an important boundary of the Earth's tropical zone.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Prime Meridian
Target entity description: The Prime Meridian is the internationally recognized zero-degree line of longitude from which all other longitudes and global time zones are measured.

• A. San Bernardino meridian
  The San Bernardino meridian is a principal survey meridian used as a reference line for land surveying and mapping in Southern California and parts of Nevada.
• B. Greenwich Mean Time
  Greenwich Mean Time is the mean solar time at the Royal Observatory in Greenwich, London, historically used as the world’s primary reference for timekeeping and the basis for Coordinated Universal Time (UTC).
• C. Tropic of Cancer
  The Tropic of Cancer is the northernmost latitude on Earth where the sun can appear directly overhead, marking the boundary of the tropical zone in the Northern Hemisphere.
• D. Equator
  The Equator is an imaginary line encircling the Earth at equal distance from the poles, dividing the planet into Northern and Southern Hemispheres and marking 0° latitude.
• E. Tropic of Capricorn
  The Tropic of Capricorn is the southernmost latitude where the sun can appear directly overhead, marking an important boundary of the Earth's tropical zone.
• F. None of above. chosen