Assertion: manatee | /r/CapableOf | distinguish blue
Facets:
value: from shades of gray
type: OTHER
Source sentences:
text: For instance, a color experiment testing to see if four manatees could distinguish blues, greens and reds from shades of gray showed that they could process blue and green, but they couldn't perceive red and blue-green combinations [source: Griebel and Schmid].