Random triples
| Subject | Object | 
|---|---|
| gptkb:Freyssinet_system | post-tensioning | 
| gptkb:Freyssinet_system | pre-tensioning | 
| gptkb:DYWIDAG_system_(prestressed_concrete_technology) | post-tensioning | 
| Subject | Object | 
|---|---|
| gptkb:Freyssinet_system | post-tensioning | 
| gptkb:Freyssinet_system | pre-tensioning | 
| gptkb:DYWIDAG_system_(prestressed_concrete_technology) | post-tensioning |