| boiler → HasPrerequisite → a pressure of 1.3 bar | 0.51 | |
| boiler → HasPrerequisite → attention | 0.51 | |
| boiler → HasPrerequisite → replacement | 0.51 | |
| boiler → HasPrerequisite → some type of fuel | 0.50 | |
| boiler → HasPrerequisite → high capacity | 0.45 | |
| boiler → HasPrerequisite → hot and cold water tanks | 0.45 | |
| boiler → HasPrerequisite → work | 0.42 | |
| boiler → HasPrerequisite → the least amount of maintenance | 0.42 | |
| boiler → HasPrerequisite → depressurising | 0.40 | |
| boiler → HasPrerequisite → good skim | 0.25 | |
| boiler → HasPrerequisite → additional make-up water | 0.16 |