Assertion: boa constrictor's head | /r/CapableOf | create template
Facets:
value: for all snakes
type: TRANSITIVE-OBJECT
value: by examining these joints
type: MANNER
Source sentences:
text: By examining these joints, ridges and knobs, and describing individual vertebrae as sets of coordinate points on a graph, Head and Polly created a template for all snakes.