Assertion: poem's pattern | /r/HasProperty | iambic
Facets:
value: usually
type: DEGREE
value: in poetry
type: LOCATION
Source sentences:
text: The five most common metrical patterns, or meters, in poetry are iambic, anapestic, trochaic, spondaic, and dactylic.
text: Any poetry that does have a set metrical pattern (usually iambic pentameter) , but does not have rhyme , is blank verse.