Assertion: archipelago's island | /r/HasProperty | alluvial and marine deposits
Facets:
value: mainly
type: DEGREE
Source sentences:
text: The low-lying islands, composed mainly of alluvial and marine deposits, are in a shallow tidal lagoon (Laguna Veneta) about 2.5 miles (4 km) east of the mainland, to which they are linked by road and railway.