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