Assertion: solar system's planet | /r/HasAspect | moons of its own
Facets:
Source sentences:
text: Pluto is considered a dwarf planet that has moons of its own.
text: Just as the moon orbits the Earth, other planets have moons of their own.
text: Even the dwarf planet of Pluto way out in the Kuiper Belt has five moons of its own.