| c2,label | |
| Science_and_technology,1 | |
| Engineering,2 | |
| Industry,3 | |
| Language,4 | |
| Government,5 | |
| Education,6 | |
| Nature,7 | |
| Mass_media,8 | |
| People,9 | |
| Military,10 | |
| Energy,11 | |
| Knowledge,12 | |
| Life,13 | |
| Organizations,14 | |
| History,15 | |
| Concepts,16 | |
| Philosophy,17 | |
| Food_and_drink,18 | |
| Humanities,19 | |
| World,20 | |
| Geography,21 | |
| Law,22 | |
| Business,23 | |
| Events,24 | |
| Entertainment,25 | |
| Culture,26 | |
| Religion,27 | |
| Ethics,28 | |
| Sports,29 | |
| Music,30 | |
| Academic_disciplines,31 | |
| Politics,32 | |
| Economy,33 | |
| Society,34 | |
| Mathematics,35 | |
| Policy,36 | |
| Health,37 | |