| meet need | 0.38 |
| exist in various sizes | 0.25 |
| connect to the bottom o… | 0.25 |
| controlled internal atm… | 0.34 |
| right size | 0.26 |
| wheel | 0.25 |
| quality | 0.51 |
| weather-proof | 0.22 |
| food grade | 0.32 |
| constructed in accordan… | 0.47 |
| delivered | 0.44 |
| placed | 0.34 |
| manufactured | 0.30 |
| removed | 0.30 |
| inserted into the system | 0.25 |
| sealed | 0.25 |