<onto_stats>
   <num_concepts>115</num_concepts>
   <max_level>3</max_level>
   <num_leaf_concepts>102</num_leaf_concepts>
   <num_instances>9504</num_instances>
   <max_num_instances_per_leaf_concept>656</max_num_instances_per_leaf_concept>
   <min_num_instances_per_leaf_concept>7</min_num_instances_per_leaf_concept>
   <max_num_immediate_children>25</max_num_immediate_children>
   <min_num_immediate_children>0</min_num_immediate_children>
</onto_stats>