Consider the following relational schema: Person (pid integer, name: string) Owns (pid: integer, cid integer, cost: real) Cat (cid integer, catName: string, age: integer) Select a relational algebra expression to find the cid of the Cat(s) who are owned by a Person named Joe. Note: the natural join operator is represented by none of these Ticid ((Oname="Joe (Owns)) ~ Person) Ticid (name='Joe (Owns Person)) Oname="Joe' (Tlcid (Person) Owns)