| tank → HasPrerequisite → pump | 0.36 | |
| tank → HasPrerequisite → maintenance | 0.36 | |
| tank → HasPrerequisite → a clarke fuel tank cap | 0.30 | |
| tank → HasPrerequisite → less maintenance | 0.27 | |
| tank → HasPrerequisite → frequent water changes | 0.22 | |
| tank → HasPrerequisite → frequent pumping | 0.21 | |
| tank → HasPrerequisite → more maintenance | 0.20 |