Possible Clues:

• Passing a couple of poles to one in river
• Passing rain's unfortunately penetrating marquee
• Short-lived violent demonstration dropped mood
• Nine tarts handed out, gone in a trice!
• Fleeting time hastened international sports broadcast
• Ephemeral article is about to be submerged in river
• Nurse enters passage that's short
• In from France entering passage, temporary
• Short-lived rain's poured in many a time
• Passing nurse in van