The independent clause is "WE ARE NOT EATING ON THE PATIO" the reason why, is because the second part of the sentence cannot stand on its own, due to the fact it has a because in it. because is a transition word.
I dont think its correct. the correct version in my opinion is with the point mentioned above.
hope this helps you
<span>The creates dramatic irony because the murderer Mary Maloney is asking the police to eat the murder weapon. ... Roald Dahl uses dramatic irony(a case when the reader knows something the characters don't) in “Lamb to the Slaughter” to develop a feeling of suspense in the reader, leaving them wanting more.
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