skos:altLabel | - triangular
- TR-3
- black triangle
- Black Triangle
- Black triangle
- Belgium UFO incident
- Black Triangles
- Black_triangle_(UFO)#TR-3A_Black_Manta
- black triangle UFO
- black triangle UFOs
- black triangles
- black triangular
- black triangular object
- triangular UFOs
- triangular craft
- triangular-shaped UFO
- Illinois police \"black triangle\" sighting incident
- The Pink Triangle: The Nazi War against Homosexuals
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