| async_sbcr_thread_s | Data for asynchronous subscribe thread |
| class_s | Class structure, represents OWL class |
| individual_s | Individual structure |
| prop_val_s | Property value structure |
| property_s | Property structure, represents OWL property |
| subscription_container_s | Container contains data for subscribe |
| subscription_data_s | Subscription data for subscription container |