The clauses ¬p∨q, ¬p∨¬q∨r, and ¬p∨¬q∨¬r∨s are examples of definite clauses. At least in classical logic these would be equivalent to the formulae p→q, (p∧q)→r, and (p∧q∧r)→s, respectively.

A man that flattereth his neighbour spreadeth a net for his feet.

Since when I've cleared the table to feed these guttlesome swans—on the best cake, too, which is simply immoral.

Loved by a Maori Chieftess (title of a 1913 film from New Zealand)