Assertion: volcano's magma | /r/CapableOf | form this lava
Facets:
Source sentences:
text: The magma forming this lava is often felsic, with high-to-intermediate levels of silica, and less mafic magma.
text: The magma forming this lava is often felsic, having high-to-intermediate levels of silica (as in rhyolite, dacite, or andesite), with lesser amounts of less-viscous mafic magma.