Assertion: plesiosaur's flipper | /r/AtLocation | same direction
Facets:
value: at the same time
type: TEMPORAL
Source sentences:
text: The extinct animals’ swimming motion has been equally up for grabs: Some have posited synchronous motion, with all four flippers moving in the same direction at the same time; others have favored semi-synchronous or asynchronous motion, where the forelimbs and hindlimbs move out-of-phase relative to each other.