Possible Clues:

• Selected piece of text
• Sample last of lager in bar
• Stifling resistance, save part of article, perhaps
• Save to cover river passage
• Short passage only about a king
• Only part of a book, but containing relevant introduction
• Piece (of music or book)
• Passage from book?
• Preserving earliest part of railway, save a few lines?
• Ring-leader in bar is a piece of work