Random triples
| Subject | Object | 
|---|---|
| gptkb:Topological_insulators | gapless surface states | 
| gptkb:Carbon_nanotube | Semiconducting | 
| gptkb:Topological_insulators | bulk band gap | 
| gptkb:Carbon_nanotube | Metallic | 
| Subject | Object | 
|---|---|
| gptkb:Topological_insulators | gapless surface states | 
| gptkb:Carbon_nanotube | Semiconducting | 
| gptkb:Topological_insulators | bulk band gap | 
| gptkb:Carbon_nanotube | Metallic |