Classify the below natural satellites based on the planet. 
Titan, Europa, Moon, Ganymede
Moon - Earth
Europa, Ganymede - Jupiter
Titan - Saturn
<START_INST>Classify the below natural satellites based on the planet. 
Titan, Europa, Moon, Ganymede<END_INST><START_CTX><END_CTX><START_A>Moon - Earth
Europa, Ganymede - Jupiter
Titan - Saturn<END_A>