Database Question

In this relation R, {name,street,city} is the only key. o nontrivial FDs/MVDs and R is in 4NF.

name	street	city
C. Fisher	123 Maple St.	Hollywood
C. Fisher	5 Locust Ln.	Malibu
C. Fisher	123 Maple St.	Hollywood
C. Fisher	5 Locust Ln.	Malibu
C. Fisher	123 Maple St.	Hollywood
C. Fisher	5 Locust Ln.	Malibu

Trivial FDs and MVDs for R include:

name,street,city X

name,street,city Y

name,street,city Z

name,street,city X

name,street,city Y

name,street,cityZ

name,street city

name street,city

Write down the single attributes

X=?, Y=? ,Z=?