Assertion: aquifer | /r/HasProperty | underground rivers
Facets:
value: very rarely
type: DEGREE
Source sentences:
text: Although aquifers are very rarely underground rivers, in Florida water has dissolved the limestone so that streams travel underground and above ground (figure 3).
text: Although aquifers are very rarely underground rivers, in Florida water has dissolved the limestone so that streams travel underground and above ground (figure 3).