| vary with time | 0.68 |
| reflect to the world | 0.44 |
| hint at third body | 0.33 |
| decrease with the squar… | 0.25 |
| vary in regular cycle | 0.25 |
| increased by about 70,0… | 0.25 |
| constant | 0.77 |
| variable | 0.44 |
| bright | 0.33 |
| proportional | 0.25 |
| equal | 0.16 |
| produced | 0.44 |
| caused by planet | 0.44 |
| caused by planetary tra… | 0.39 |
| difficult to predict | 0.33 |