PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This small cross-section is why gravity is so weak compared to other forces (e.g., the gravitational attraction between two apples is negligible, and you need immense masses like the mass of the earth to make the gravitational interaction significant, whereas other fundamental forces show up when dealing with just a few particles).
http://www.w3.org/ns/prov#wasQuotedFrom
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