sentences: the parent pecan tree has a thick trunk
docs: pecan_tree is deciduous_plant. hickory_tree is pecan_tree. tree has roots_branches_leaves_and_trunk tree's_trunk is widest_at_tree's_base. pecan_tree is tree. pecan is nut_tree. tree has trunk pecan is wood. pecan_tree is fruit_tree. pecan_tree is hickory_tree.