Assertion: preposition's use | /r/HasProperty | idiomatic
Facets:
value: in many cases
type: TEMPORAL
Source sentences:
text: To some extent, complex prepositions are created through idiomatic use, and I didn’t want to include any complex prepositions that might be debatable or that are just plain wrong.
text: Prepositions are difficult to master in any language because their use is idiomatic in many cases.