Assertion: sonnet | /r/HasProperty | unique
Facets:
value: in the collection
type: LOCATION
value: among poetic forms in western literature
type: OTHER
Source sentences:
text: The sonnet is unique among poetic forms in Western literature in that it has retained its appeal for major poets for five centuries.
text: However this sonnet is unique in the collection because, instead of iambic pentameter, it is written in iambic tetrameter, a poetic metre based on four (rather than five) pairs of metrically weak/strong syllabic positions.