Assertion: amber | /r/HasProperty | formed
Facets:
value: from resin
type: OTHER
value: from the sap of ancient trees
type: OTHER
value: from sap
type: CAUSE
Source sentences:
text: Amber is formed from resin exuded from tree bark (figure 9), although it is also produced in the heartwood.
text: Amber is formed from resin coming out of certain trees.
text: Amber of any color has this effect, but remember that Amber is formed from tree sap and resin, ancient lifeblood of ancient trees.
text: Amber is formed from sap coming out of certain trees.
text: Amber is formed from the sap of ancient trees that hardened over time.