Complex sentence: The Forest of Arden is stated by Shakespeare to be the setting for "As You Like It"; however, since the play is also set in France, it should not necessarily be thought of as taking place in a real forest in Arden.
Split into simpler sentences: The Forest of Arden is stated by Shakespeare to be the setting for "As You Like It". However, since the play is also set in France, it should not necessarily be thought of as taking place in a real forest in Arden.