Sentence 1: OPEC producers at a meeting on Wednesday are set to pressure independent oil exporters to contribute to the cartel's next supply cut to allow for the return of Iraqi oil.

Sentence 2: OPEC this week is set to pressure independent exporters to back the cartel's next supply cut to prevent the resumption of Iraqi exports undercutting oil prices.

From 0 to 5 (0="no meaning overlap" and 5="means the same thing"), how similar are the two sentences?
3