Assertion: snail's shell | /r/HasProperty | spiral
Facets:
Source sentences:
text: Their shells can be spiral, rounded, pointed or flat with colors varying from white to brown.
text: The shell itself is globose, smooth and the shell's spiral is standing out only a little in comparison to most of the Apple snails.
text: Tiny snails found on Australia's eastern coast can flicker their spiral shells like dim, blue-green light bulbs.