Hi strega...while we are waiting for chazchaz one thing I would say is don't always rely on one particular website for information (as Sinco has already implied). Sometimes it is not accurate, so its always worth double checking. Whereas the Fokker B2 is a sesquiplane it is only an example of one....do a search for Fokker sesquiplane and you will find several different aircraft. Don't worry, I think most of us here have been caught out before! Having said all that I know very well when you know you are competing with someone else you sometimes have to jump in....the danger is of course you give the game away to your opponent!
So enjoy the competition....its good fun...and never be afraid to ask us questions, but remember we are learning too!