| pond → HasPrerequisite → maintenance | 0.60 | |
| pond → HasPrerequisite → permit | 0.41 | |
| pond → HasPrerequisite → oxygen | 0.39 | |
| pond → HasPrerequisite → constant oxygen | 0.36 | |
| pond → HasPrerequisite → frequent cleaning | 0.25 | |
| pond → HasPrerequisite → less maintenance | 0.25 |