Random triples
| Subject | Object |
|---|---|
| gptkb:GW170104 | electromagnetic counterparts not detected |
| gptkb:Wow!_signal | none successful |
| gptkb:second_event_detected_by_LIGO | notable follow-up by astronomers |
| gptkb:first_observation_of_a_binary_black_hole_merger | electromagnetic counterparts |
| gptkb:GW170814 | no electromagnetic counterpart found |
| gptkb:GW170814 | electromagnetic counterparts not detected |
| gptkb:First_direct_detection_of_gravitational_waves | electromagnetic counterparts |