Figure 3: By assigning valid semantic relations between concepts, knowl-
edge base is built.
propositions thus created are as follows—vertebrata includes fish, mammal;
plankton includes phytoplankton, zooplankton; amino acids includes alanine,
glutamine; purines includes adenine, guanine (class inclusion); mitochondria
part-of cell (meronymic inclusion); DNA wound-around histones; ribosomes
located-on endoplasmic reticulum; protein synthesis occurs-in cytoplasm (spa-
tial inclusion); nucleus function DNA synthesis (function relation). Currently
the support for specifying scope of relations (quantification) and modal-
ity of assertions are being developed in GNOWSYS. This feature enables
to represent propositions such as: Some ribosomes located-on endoplasmic
reticulum; All DNA wound-around histones in Eukaryotic cell.
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