Forcing single URL to use specific WAN

Hi ,
I wonder if someone can help me.
I have 3 interfaces configured.

ethernet 1 WAN1
ethernet 2 WAN2
ethernet 3 LAN (192.168.1.0)

What I’m trying to achieve is to force a single URL (for example google.com) to use only specific WAN (for example WAN1).
How can I achieve that?

Any help appreciated.

Searching topics doesn’t hurt.
http://forum.mikrotik.com/t/forcing-single-ip-to-use-specific-wan/85520/1

Actually,
way better is to read this:
https://wiki.mikrotik.com/wiki/Policy_Base_Routing

Mangle is your friend. Use it to mark the connections you want to go out via specific WAN interface then use static route only for those connection marks.

I use something similar to send traffic up 2 different VPN tunnels.