Task: Question Answering
Input (English): Passage: On their way back from whitewater rafting with Juno and Beth, Sarah, along with Sarah's husband Paul and their daughter Jessica, are involved in a car accident when Paul is distracted. Paul and Jessica are killed, but Sarah survives.
One year later, Sarah, Juno, and Beth, as well as friends Sam, Rebecca, and newcomer Holly are reunited at a cabin in the Appalachian Mountains of North Carolina for a spelunking (caving) adventure. The next day, they hike up to a cave entrance and descend. While in the cave, Juno apologises to Sarah for not being there for her after the accident, but Sarah is distant.
After the group moves through a narrow passage, it collapses behind them, trapping them. After a heated discussion, Juno admits that she has led the group into an unknown cave system instead of the fully explored cave system that they had originally planned to visit, and that rescue is, therefore, impossible. She then tells Sarah that she led them into the unknown cave in the hopes of restoring their relationship, but Sarah rebuffs her. 
Question: Who are the people Juno let into an unknown cave system?
Output (English): Sam.