Figure 1

The position of chloroquine in IDOMAL. The figure shows the positions of chloroquine in the IDOMAL ontology tree. A: the is_a path from chloroquine to the top-level object class; B: three different paths leading from chloroquine and converging to process of malaria (an is_a child of the top-level class process) linking parent-children terms with different relations; C: the third path of chloroquine leading to the top-level class role through two different relations. The different relations are indicated by different signs and colours: grey box = is_a, blue circle = part_of, yellow box = has_role, green box = agent_in.