The pronoun "el cual" can replace "que". It is generally more emphatic and formal than "[el que", and it always includes the definite article. It is derived from the Latin QVALIS, and it has the following forms: "el cual", "la cual", "los cuales", "las cuales", and the neuter "lo cual". It can be used as a formal, emphatic replacement for "que" in non-defining clauses, for both subjects and direct objects, and it can also be used as a formal, emphatic replacement for "el que" as the object of some prepositions. Moreover, it is often preferred to "el que" entirely in certain contexts. In non-defining clauses, the fact that it agrees for gender and number can make it clearer to what it refers. The fact that it cannot be used as the subject or direct object in defining clauses also makes it clear that a defining clause is not intended: