If your knowledge of “Swan Lake” is from the 2010 film “Black Swan,” you need to see the real thing. And it doesn’t get more real than a Russian troupe dancing a Russian ballet. Tchaikovsky’s “Swan Lake” is one of the best known classical ballets -— full of White Swan vs. Black Swan, good vs. evil. This production performed by the State Ballet Theatre of Russia from Moscow will be in four acts with one intermission.