 |
| extração: 222 phrases in 29 subjects |
| Agriculture | 36 |
| Brazil | 2 |
| Chemistry | 16 |
| Coal | 12 |
| Communications | 3 |
| Earth sciences | 6 |
| Economy | 3 |
| Electronics | 8 |
| Energy industry | 5 |
| Environment | 29 |
| Finances | 1 |
| General | 5 |
| Hobbies and pastimes | 1 |
| Industry | 25 |
| Information technology | 14 |
| Life sciences | 5 |
| Materials science | 1 |
| Mechanic engineering | 2 |
| Metallurgy | 3 |
| Microsoft | 7 |
| Mining | 1 |
| Municipal planning | 5 |
| Natural sciences | 2 |
| Physical sciences | 2 |
| Statistics | 5 |
| Technology | 10 |
| Transport | 8 |
| Waste management | 3 |
| Work flow | 2 |