I’m having trouble understanding the meaning of Q5 in Lab 4, particularly the phrase, "but not both in the po_items table." Based on the data given, no job_id has both item_ids in po_items, and no po_id has both item_ids in po_items. Am I working with incorrect data for Lab 4? Even with the expected answer, I’m struggling to identify any logical approach that fits the question. Could someone explain the question in more detail? Thank you for your assistance.