Possible Clues:

• It holds possibilities for upset (or turnover)
• It is often upset
• It gets upset
• Of all the plays of GBS, that was the most upsetting
• What an upsetting play by Shaw!
• How upsetting for Granny Smith's carrier!
• Could be so upsetting for such as Granny Smith
• It may have provided turnover for Shaw
• Helpful software about transport, something that bears fruit in market
• Fruit carrier, often upset