type/question
a statement that can be satisfied by a claim
type/claim
a predictive or declarative statement
type/observation
a past tense statement (associated with an external source, if none stated then I am the source)
type/external
an external entity or source
type/concept
an idea or schema (may or may not be original)
e.g. high / medium / low, 0-10, -inf to inf, etc
probably contains an observation, and is associated with an external source
relationship/informs
node => node
relationship/supports
claim => claim
observation => claim
relationship/opposes
relationship/responds-to
claim => question
relationship/similar-to
claim => quantity