Definition: In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as `a` for Yes or `b` for No.
Input: Question: How old was Alexis Davis the year she was attacked by the Text Message Killer? Passage:As its name suggests, Port Charles is a major port. The Waterfront district has been under the control of Sonny Corinthos for over a decade, though rival gangs have tried to move in on his territory, such as Lorenzo Alcazar, the Ruiz brothers, and others. Kelly's, a local eatery, is located in this area and the Elm Street Pier is also located here. Majority of the Port Charles waterfront is owned by the Pride-Philips Company, which was given to Courtney Matthews as a thank you from a woman whose life she saved. Courtney later sold Pride-Philips to Lorenzo Alcazar. In 2008, Alexis Davis and Sam McCall are attacked here by the Text Message Killer. On March 17, 2008, one of the warehouses on the docks, an abandoned cannery, exploded. Sonny met with Claudia Zacchara to return Johnny to her. She arrived, and got on the phone with an ally to try and peace with them and Sonny. Meanwhile, Trevor Lansing and sniper stood on a loft in the warehouse, poised to shoot Claudia. Ric Lansing and Marianna Erosa were in another part of it, trying to cover the dead body of Randy. Carly finally finds Michael, where he confesses to shooting Kate Howard. They began to leave and go home. Meanwhile, a bomb is slowly ticking away. Right as the sniper pulls his trigger, the bomb goes of, and an explosion rips through the building. Everyone survives the event, but Carly miscarries her baby. Soon after The Docks became the site of a fake prescription drug ring headed up by Jerry Jacks. The ring produced placebos that claimed at least one life; a female heart patient. Matt Hunter was the prime suspect, but the extent of his involvement cleared. Andrei Karpov had a cargo ship, Odyssey, docked in the harbor.


a