You will be given a summary of a story. You need to create a question that can be answered from the story. You can create a question about characters, events, facts and beliefs, etc. Your question should be specific, try not to use pronouns instead of full names. As the stories are sometimes movie plots, they will contain actor names in parentheses. You should not use those names. Only use character names. Try to ask a question about all parts of the plot, not just the beginning.

 The story opens with Buck, a large and powerful St. Bernard-Scotch Shepherd, living happily in California's Santa Clara Valley as the pet of Judge Miller. He is stolen by the gardener's assistant, however, sold to fund the latter's gambling addiction, and shipped to Seattle. Put in a crate, he is starved and ill-treated. When released, he attacks the "man in the red sweater" but is badly beaten and taught to respect the "law of the club". Buck is then sold to a pair of French-Canadian dispatchers from the Canadian government, Fran ois and Perrault, who take him with them to the Klondike region of Canada. There, they train him as a sled dog. From his teammates, he quickly learns to survive cold winter nights and the pack society. A rivalry develops between Buck and the vicious, quarrelsome lead dog, Spitz. Buck eventually beats Spitz in a fight "to the death". Spitz is killed by the pack after his defeat by Buck, and Buck eventually becomes the leader of the team.
The team is then sold to a "Scottish half-breed" man working the mail service. The dogs must carry heavy loads to the mining areas, and the journeys they made were tiresome and long. One of the team, a morose husky named Dave, becomes sick and eventually has to be shot to end his misery.
Buck's next owners are a trio of stampeders (Hal, Charles, and a woman named Mercedes from the United States), who are inexperienced at surviving in the Northern wilderness. They struggle to control the sled and ignore warnings that the spring melt poses dangers. They overfeed the dogs and then starve them when the food runs out. On their journey they meet John Thornton, an experienced outdoorsman, who notices the dogs have been poorly treated and are in a weakened condition. He warns the trio against crossing the river, but they ignore his advice and order Buck to move on. Exhausted, starving, and sensing the danger ahead, Buck refuses and continues to lie unmoving in the snow. After Buck is beaten by Hal, Thornton recognizes him to be a remarkable dog. Disgusted by the driver's treatment of Buck, Thornton hits Hal with the butt of his axe, cuts Buck free from his traces, and tells the trio he is keeping him, much to Hal's displeasure. After some argument, the trio leaves and tries to cross the river, but as Thornton warned, the ice breaks, and the three fall into the river and drown, along with the sled and neglected dogs.
Buck comes to love and grow devoted to Thornton as he nurses him back to health. He saves Thornton when the man falls into a river. After Thornton takes him on trips to pan for gold, a bonanza king (someone who hit it rich in a certain area) wagers Thornton on the dog's strength and devotion. Buck wins by breaking a half-ton (1,000-pound (450 kg)) sled free of the frozen ground, pulling it 100 yards (91 m) and winning US$1,600 in gold dust. A king of the Skookum Benches offers a large sum to buy Buck, but Thornton has grown fond of him and declines. While Thornton and his friends continue their search for gold, Buck explores the wilderness and socializes with a timber wolf from a local pack. One night, he returns from a long hunt to find that his beloved master and the others in the camp have been killed by a group of Yeehat natives. Buck eventually kills the natives to avenge Thornton, and he then is attacked by an entire pack of wolves. Buck wins the fight, then finds that the same timber wolf he had socialized with is in the pack he fought. Buck then follows the wolf and its pack into the forest, and answers the call of the wild. At the end of the story, Buck returns each year as the Ghost Dog of the Northland Legend, to mourn at the site of Thornton's death.
What did Buck have to break to win the wager?

 The novel begins with the Rigonda family and two men aboard a castaway ship somewhere in the south Pacific. The family finds a hidden cache of food and they land safely on a nearby island.
After finding shelter they set out to explore the island. They soon find that everything they need seems to grow on trees. They explore, hunt wild boar, and construct a signal flag to attract passing ships.
During a tremendous storm, an emigrant ship is wrecked on the coral reef just off the island. Otto and Dominick Rigonda run to aid the passengers.
The two parties become acquainted and work together to build suitable housing. The men begin offloading supplies and constructing makeshift shelters. The women are charged with caring for the children and establishing a domicile.
Dominick and Malines come to blows, which results in Mother Lynch nominating Pauline to be queen. Pauline surprises everyone by naming Joe Binney her prime minister. A few days later, Pauline and Otto are kidnapped by natives and brought aboard their canoe. The colonists give chase and fire a volley at the natives, who allow the children to jump overboard.
A few nights later Malines and his co-conspirators are caught preparing to leave the island without the emigrants. The conspirators are marched back to the camp and put in makeshift jails. Dr. Marsh is appointed as judge over the kangaroo court.
Queen Pauline surprises the community by pardoning the criminals and offers her hand for them to kiss allegiance. For a time thereafter, there is peace, except for a group of natives hiding in the foliage who are dispatched by the gun-toting colonists.
An earthquake strikes suddenly and begins to destroy the colony, and everyone flees in the only intact boat just before the entire island sinks into the sea.
The refugees set sail for their original port, but a storm renders the ship unseaworthy once again and they must pull in to a different port. A ship bound for England is docked there and the Rigondas soon arrange for their passage home to England. The novel ends as the children are finally reunited with their parents, who are none too eager to hear their tales of adventure.
What do the castaways do to try and signal for help after they are stranded?

 Christie's reputation as "The Queen of Crime" was built upon the large number of classic motifs that she introduced, or for which she provided the most famous example. Christie built these tropes into what is now considered classic mystery structure: a murder is committed, there are multiple suspects who are all concealing secrets, and the detective gradually uncovers these secrets over the course of the story, discovering the most shocking twists towards the end. Culprits in Christie's mysteries have included children, policemen, narrators, already deceased individuals, and sometimes comprise no known suspects (And Then There Were None) or all of the suspects (Murder on the Orient Express).
At the end, in a Christie hallmark, the detective usually gathers the surviving suspects into one room, explains the course of his deductive reasoning, and reveals the guilty party, although there are exceptions in which it is left to the guilty party to explain all (such as And Then There Were None and Endless Night, both rather nihilistic in nature).
Christie allows some culprits to escape earthly justice for a variety of reasons, such as the passage of time (retrospective cases), in which the most important characters have already died, or by active prescription. Such cases include The Witness for the Prosecution, Murder on the Orient Express, The Man in the Brown Suit, Elephants Can Remember, and The Unexpected Guest. There are instances in which a killer is not brought to justice in the legal sense but does die as a direct result of his plot, sometimes by his own hand at the direction or with the collusion of the detective (usually Hercule Poirot). This occurs in The Murder of Roger Ackroyd, Death on the Nile, Dumb Witness, Crooked House, The Hollow, The Mirror Crack'd from Side to Side, Cat Among the Pigeons, Peril at End House, Nemesis, Appointment with Death, The Secret Adversary, and Curtain. In the last of these (Curtain), no fewer than three culprits die during the course of the story.
In The A.B.C. Murders, the murderer has killed four innocent people and attempted to frame an unstable man for the crimes. Hercule Poirot, however, prevents this easy way out, ensuring a trial and hanging. In And Then There Were None, the killer's own death is intrinsic to the plot; the red herring is when and how the killer actually died. However, stage, film, and television productions of some of these mysteries were traditionally sanitized with the culprits not evading some form of justice, for a variety of reasons  e.g., censors, plot clarity, and Christie's own changing tastes. (When Christie adapted Witness for the Prosecution into a stage play, she lengthened the ending so that the murderer was also killed; this format was followed in film and television productions, most famously the Charles Laughton/Marlene Dietrich film.) In Death Comes as the End, set in ancient Egypt, the culprit is killed in the act before he can claim another victim by one of the few surviving characters.
In some stories, the question remains unresolved of whether formal justice will ever be delivered, such as Five Little Pigs and Endless Night. According to P. D. James, Christie often, but not always, made the unlikeliest character the guilty party. Savvy readers could sometimes identify the culprit by simply identifying the least likely suspect.
On an edition of Desert Island Discs in 2007, Brian Aldiss claimed that Christie had told him that she wrote her books up to the last chapter, then decided who the most unlikely suspect was, after which she would go back and make the necessary changes to "frame" that person. However, John Curran's Agatha Christie: The Secret Notebooks describes different working methods for every book in Christie's bibliography, contradicting the claim by Aldiss.

Who said Christie often makes an unlikely character the culprit?