Triple

Target class: Very Long Baseline Array station
Context triple: [VLBA antenna at St. Croix, U.S. Virgin Islands, instanceOf, Very Long Baseline Array station]

• A. long-baseline interferometer
  A long-baseline interferometer is an instrument that combines signals from widely separated telescopes or antennas to achieve the resolving power of a much larger aperture for high-precision measurements and imaging.
• B. radio interferometer observatory chosen
  A radio interferometer observatory is a facility that combines signals from multiple spatially separated radio antennas to synthesize a much larger effective telescope for high-resolution observations of celestial radio sources.
• C. VLBI radio satellite
  A VLBI radio satellite is a space-based observatory that precisely records radio signals from cosmic sources in coordination with ground telescopes to form an extremely large virtual antenna for high-resolution astronomical imaging and measurements.
• D. millimeter-wavelength telescope
  A millimeter-wavelength telescope is an astronomical instrument designed to collect and focus electromagnetic radiation in the millimeter band, enabling observations of cold cosmic objects such as molecular clouds, star-forming regions, and the cosmic microwave background.
• E. single-dish telescope
  A single-dish telescope is an observational instrument that uses one continuous, typically parabolic, collecting surface to gather and focus electromagnetic radiation from astronomical sources.
• F. None of above.