Triple

Target entity: Colorado River
Context triple: [northwestern Arizona, traversedByRiver, Colorado River]

• A. Colorado River chosen
  The Colorado River is a major waterway of the southwestern United States and northern Mexico, renowned for carving the Grand Canyon and serving as a crucial water source for arid regions and Indigenous communities.
• B. Colorado River
  The Colorado River in Argentina is a major watercourse in the south-central part of the country that flows eastward from the Andes to the Atlantic Ocean, forming part of the boundary of Buenos Aires Province and supporting regional agriculture and irrigation.
• C. Arkansas River
  The Arkansas River is a major tributary of the Mississippi River that flows from the Rocky Mountains in Colorado through Kansas, Oklahoma, and Arkansas, playing a key role in the region’s ecology, history, and commerce.
• D. Gunnison River
  The Gunnison River is a major tributary of the Colorado River in western Colorado, known for carving the dramatic Black Canyon and supporting recreation, irrigation, and hydropower in the region.
• E. San Luis Rey River
  The San Luis Rey River is a major waterway in northern San Diego County, California, flowing from the inland mountains westward to the Pacific Ocean near Oceanside.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.