Assertion: mantis | /r/HasProperty | preceded by spin
Facets:
value: often
type: TEMPORAL
Source sentences:
text: When flying at night, at least some mantises are able to detect the echolocation sounds produced by bats; when the frequency begins to increase rapidly, indicating an approaching bat, they stop flying horizontally and begin a descending spiral toward the safety of the ground, often preceded by an aerial loop or spin.