| Evidence | QPN | MI-QPN | |||||||
| Node | Sign | Rain | Sprinkler | Grass | Wall | Rain | Sprinkler | Grass | Wall |
| Rain | + | + | − | ? | ? | + | − | + | − |
| Sprinkler | + | − | + | ? | ? | − | + | + | + |
| Grass | + | ? | ? | + | ? | + | + | + | + |
| Wall | + | ? | ? | ? | + | − | + | + | + |