sentences: the subduction of tectonic plates is found at the convergent boundaries / the converging boundaries
docs: locus_coeruleus_na_neuron is neuron. downward_force_vector is relative_location. phosphodiester_bonding is covalent_linking. tectonic_plate is stone. rearward_passage_of_lines is passage_of_lines. transmembrane_domain is molecular_component. earth has tectonic_plates coordinate_bond is covalent_bond. upward_force_vector is relative_location. tectona is asterid_dicot_genus.