a mitochondrion is a kind of cellular organelle
mitochondrion is not eukaryotic_cell_organelle. outer_mitochondrial_membrane is organelle_part. mitochondrion is not internal_body_part. cell_nucleus is organelle. mitochondrion is organelle. mitochondrion is eukaryotic_cell_organelle. mitochondrion is internal_body_part. mitochondrion is not organelle.