Assertion: caldera's diameter | /r/HasProperty | 15 kilometres
Facets:
Source sentences:
text: This is characterized by the Neapolitan yellow tuff that is the remains of an immense underwater volcano, with a diameter of c. 15 kilometres (9.3 mi) ; Pozzuoli is at its center.
text: This is characterized by the Neapolitan yellow tuff that is the remains of an immense underwater volcano, with a diameter of c. 15 kilometres (9.3 mi) ; Pozzuoli is at its center.