Iff the subject is a list of lists and the concatenation of all those lists is the object, then this is true. eg ( (1 2) (3 4) ) list:append (1 2 3 4). The object can be calculated as a function of the subject. Iff the object is a list and the subject is in that list, then this is true. Iff the suject is a list and the obbject is the last thing that list, then this is true. The object can be calculated as a function of the list. Iff the subject is a list and the obbject is in that list, then this is true.