Assertion: kilogram's weight | /r/HasProperty | 28 u
Facets:
Source sentences:
text: 78% molecules of nitrogen N₂ that has two N atoms with atomic weight 14 u (total weight is 28 u),
text: that has two N atoms with atomic weight 14 u (total weight is 28 u), 21% molecules of oxygen O₂ that has two O atoms with atomic weight 16 u (total weight is 32 u), and