septic tank → HasPrerequisite → regular pumping | 0.48 | |
septic tank → HasPrerequisite → repair | 0.44 | |
septic tank → HasPrerequisite → basic maintenance | 0.43 | |
septic tank → HasPrerequisite → connection | 0.41 | |
septic tank → HasPrerequisite → de-sludging | 0.25 |