Assertion: gull | /r/HasProperty | monogamous
Facets:
Source sentences:
text: Bonaparte's gulls begin breeding at two years of age; they are thought to be monogamous.
text: Seagulls are monogamous creatures that mate for life and rarely divorce.
text: Gulls are habitual and monogamous with gull pairs returning to a location if nesting is successful.
text: Seagulls are monogamous creatures (they mate for a lifetime).