@prefix schema: <https://schema.org/> .
@prefix af: <https://anchorfact.org/ns#> .

<https://anchorfact.org/kb/science/earthquakes>
  a schema:TechArticle ;
  schema:headline "Earthquakes" ;
  schema:url <https://anchorfact.org/science/earthquakes/> ;
  af:status "public" ;
  af:confidence "medium" ;
  af:confidenceScore "0.83" ;
  af:confidenceBasis "verified_sources" ;
  af:generationMethod "ai_structured" .

<https://anchorfact.org/kb/science/earthquakes>
  schema:citation <https://www.usgs.gov/faqs/what-earthquake-and-what-causes-them-happen> ;
  af:sourceTier "A" .

<https://anchorfact.org/kb/science/earthquakes>
  schema:citation <https://www.usgs.gov/programs/earthquake-hazards/magnitude-types> ;
  af:sourceTier "A" .

<https://anchorfact.org/kb/science/earthquakes>
  schema:citation <https://www.usgs.gov/faqs/can-megaquakes-really-happen-a-magnitude-10-or-larger/> ;
  af:sourceTier "A" .