Relation sumo#sub_list__sublist__sub_list_of (sumo#list,sumo#list)  the 1st argument is a sublist of the 2nd, i.e. every element of the 1st is an element of the 2nd and the elements that are common to both lists have the same order in both lists
  supertype:  pm#sub_collection_of (pm)  pm#partial_ordering_relation (pm)
  instance of:  pm#binary_predicate_type (pm)  pm#partial_ordering_relation_type (pm)
  subtype:  sumo#initial_list__initiallist (sumo#list,sumo#list)  the 1st argument (?L1) is a sublist of the 2nd (?L2), and (sumo#list_order_fn ?L1 ?NUMBER) returns the same value as (sumo#list_order_fn ?L2 ?N) for all of the values of ?N over which (sumo#list_order_fn ?L1 ?N) is defined