Assertion: pigeon | /r/CapableOf | learn to make discriminative responses
Facets:
value: to different categories of stimuli
type: OTHER
value: readily
type: MANNER
Source sentences:
text: Pigeons readily learn to make discriminative responses to different categories of stimuli, defined either by arbitrary rules (e.g. green triangles) or by human concepts (e.g. pictures of human beings).