Jessica, Mark, and Susan were all soccer players, playing whenever the chance arose. One day they took their normal shortcut to the soccer pitch across the Jones's front lawn, passing the ball as they crossed. Susan passed the ball to Jessica; Mark noticed that the ball bounced over something on the lawn and went to investigate. He saw the top of a small box partially embedded in the ground. As he dug it out, Jessica and Susan joined him, as did Mr. Jones who had been looking out his front window. Mark opened the box; inside was a ring that looked expensive (a subsequent appraisal would value the ring at $25,000). Mr. Jones politely but firmly insisted Mark hand the ring over to him, a request with which Mark complied. After a year, the true owner had not come forward to claim the ring. What is the likelihood that Mark will succeed in an action to recover the ring (or its value) from Mr. Jones? Why?