Assertion: terrestrial planet's moon | /r/HasProperty | small
Facets:
Source sentences:
text: Mars has two moons, Phobos and Deimos, which are small and irregularly shaped.
text: For now, we might say, crudely simplifying, that the Moon and Mars are too small, and Venus is too hot for an ocean.
text: The outer moons of the giant planets tend to be small and have eccentric orbits with arbitrary inclinations.