Assertion: palm's frond | /r/HasProperty | heavy
Facets:
Source sentences:
text: The fronds are large and heavy and are a bright to deep green and featherlike, or pinnate.
text: Because palms tend to have heavy fronds and trunks, the numerous roots act both as anchors and feeders to sustain the growing plant -- even trees taller than 50 feet do not use a taproot system that is common in other tree species.