| sentence_1,sentence_2,label_ids | |
| Astrophysics of Galaxies,Astrophysics,2 | |
| Cosmology and Nongalactic Astrophysics,Astrophysics,2 | |
| Earth and Planetary Astrophysics,Astrophysics,2 | |
| High Energy Astrophysical Phenomena,Astrophysics,2 | |
| Instrumentation and Methods for Astrophysics,Astrophysics,2 | |
| Solar and Stellar Astrophysics,Astrophysics,2 |