Assertion: octopus's color | /r/HasProperty | dark
Facets:
Source sentences:
text: If two octopuses approached each other and displayed dark colors, the encounter was likely to escalate aggressively and lead to physical confrontation.
text: An octopus that was standing tall would usually also display a dark color and raise its mantle, all of which, the researchers said, appeared to signify aggression toward another octopus.