question:  What caused Sally to float through the air?
context: [Transcriber's Note: This etext was produced from Galaxy Science Fiction December 1956. When he slid under the table containing the drinks, Miss Pringle, who sold millinery, had screamed: "He'll drown!" One out of every three dirty stories started by party attendees had remained unfinished, because each had reminded someone else of another story. The recently developed liquors which affected the bloodstream three times faster had driven away twinges of conscience about untrimmed trees and midnight church services. "It's all in the spirit of good, clean fun!" cried Mr. Hawkins, the assistant general manager. Mr. Hawkins himself, acting by reflex, attempted to return the portrait to its place until new glass could be obtained. To hear more of it, he said to her: "I'll bet that's been in there ever since the picture was framed. "Unless—" he said it loud enough for the employes to scent a great proposal and the room grew quiet—"unless we broke the rules just once and used the time warp on a big mission!" But I remember that my grandmother never bought anything from Hartshorne-Logan because of some trouble her mother had once with the firm. Two-year-old Sally heard the box rattling. She waddled up on chubby legs and grabbed her mother's skirt. She found scissors in her sewing box, tossed a cushion onto the floor, sat on it, and began to open the parcel. The twine sprang away from the carton as if it were alive. Ann grabbed her daughter's arms, held them above her head and pulled at the dress. When Ann released the child's arms to loosen the dress, Sally squirmed away. She took one step forward, then began to float three inches above the ground. Sally looked scared until she saw her mother's face. Sally just—" Sally crouched to jump at her father. A triangular trio of jacks stuck out from one end. A minute ago, Sally—" He peered into the box for an instruction sheet, uselessly.
output:  The dress that was in the shipment.
options:  The manky that was in the shipment.  The strange doorbell with no wire.  They eyeball from the detective kit.  The dress that was in the shipment.