Several times a <e1>flock</e1> of wild <e2>ducks</e2> (Anas superciliosd) flew over, evidently making their way to the more open water- ways several miles west.
Several times a flock
Several times a flock of wild ducks (Anas superciliosd) flew over, evidently making their way to the more open water- ways several miles west.
<triplet> flock <subject> ducks <object> Member-Collection(e2,e1)