PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Plants, algae, and microscopic organisms such as phytoplankton and some bacteria, make energy-rich molecules (in other words, their food) from sunlight, water, and carbon dioxide during the process called photosynthesis (???photo??? means ???light, and ???synthesis??? means ???to make??? ??? photosynthesizers are using sunlight to make food).
http://www.w3.org/ns/prov#wasQuotedFrom
  • khanacademy.org