Broker Class C Sharp with two sources.

I have my data distributed between a local database exposed by a class with all the logic and a WCF Service.
Some methods (selects) should be called to the local database  due performance, but the more complex ones should be called to the WCF proxy.
Is there a pattern implemented on C# that doesn't involve rewriting every method like a facade to decide wheather to go WCF or Local DB?

Example

My WCF Proxy has the method

IEnumerable<LanguageDTO> getLanguages();

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And I have a class conected to the local database that also has the method

IEnumerable<LanguageDTO> getLanguages();

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I am building a class called Broker that should expose also the method getLanguages() to the GUI and should decide which getLanguages to call (WCF or Database)

Is there a way of building that class without creating every method again?

Thanks