Assertion: archipelago's island | /r/HasProperty | volcanic
Facets:
Source sentences:
text: The eastern islands are not volcanic and sit above the mostly submerged Tonga ridge that runs parallel to the Tongan Volcanic Arch and the Tongan Trench.
text: Covering a total land area of 320 square miles (830 square km), the archipelago consists of numerous volcanic islands.
text: Most Polynesian islands and archipelagos, including the Hawaiian Islands and Samoa, are composed of volcanic islands built by hotspots (volcanoes).