Contextual Vocabulary Acquisition: "aphelion"

• Context:
  • "Earth reaches perihelion in early January each year, and passes through its aphelion point near the start of July. ... Earth is about 3% further from the Sun at aphelion than it is at perihelion."
    • "Perihelion and Aphelion", Windows to the Universe
    • [NB: "The passage is a modified version of the information found at" this website! (Duncan 2008: 3,n.5).]

• Researcher:
  • Bill Duncan

• Report:
  Duncan, Bill (2008), "A SNePS Representation for Computationally Determining the Meaning of "Aphelion Point" from Context".

• Files:
  • demo
  • sample run