In this task, you're given the title of a story consisting of five sentences, numbered 1 through 5. Your job is to arrange the sentences in order to make a story that makes complete sense and is apt for the title. Indicate your answer using the number of the sentences in order, such as '34152'.

Title: The Discovery. Sentence 1: He and his friend, Kevin, went on a hike to identify rocks. Sentence 2: They brought the rock back to college and gave it to their teacher. Sentence 3: Their teacher said, wow, you discovered a new rock! Sentence 4: Jason was a Geology minor in college. Sentence 5: They found a red rock but they couldn't explain why it was red.
41523