Assertion: gravity | /r/HasProperty | mystery
Facets:
value: to them
type: TRANSITIVE-OBJECT
value: by franklyn m. branley
type: OTHER
Source sentences:
text: Gravity Is a Mystery by Franklyn M. Branley, ages 4–8
text: To them, gravity is one of the mysteries to be solved in order to get a complete understanding of how the Universe works.