Random triples
| Subject | Object |
|---|---|
| gptkb:Drake_formula | fraction of stars with planetary systems |
| gptkb:Drake_Equation | Fraction of those stars that have planetary systems |
| gptkb:Drake_equation_(1961) | fraction of those stars that have planets |
| Subject | Object |
|---|---|
| gptkb:Drake_formula | fraction of stars with planetary systems |
| gptkb:Drake_Equation | Fraction of those stars that have planetary systems |
| gptkb:Drake_equation_(1961) | fraction of those stars that have planets |