[edit] data structure

• the term data structure (HDO_00000005) is currently placed under OWL:thing
• it is defined as definition "A structure whose parts or elements are data."@en
• the term Infrastructure (HDO_00002028) is currently placed under PATO:structure
• PATO:strucutre is a subclass of PATO:morphology and defined as a morphology quality

ACTION:

• place term data structure as subclass of structure (HDO_00000041)
• place term infrastructure as subclass of system (HDO_00001049)