Detailed Instructions: Indicate a text span in the passage about which an inquisitive question is asked. (note, don't answer the question).
Problem:Sentence: General Motors Corp . , in a series of moves that angered union officials in the U . S . and Canada , has signaled that as many as five North American assembly plants may not survive the mid - 1990s as the corporation struggles to cut its excess vehicle - making capacity .<sep>Question: Which five assembly plants?
Solution:
five North American assembly plants