Assertion: apple tree's leaf | /r/ObjectUse | used as astringent
Facets:
Source sentences:
text: Its barks and leaves are used as a laxative and astringent.
text: Leaf and bark of the tree is used as an astringent and laxative, the bruised bark, externally as a cataplasm in arthritis, and the fruit juice as a cough mixture, a cooling beverage as also for toning up the nervous system.