Tom Sawyer & Huckleberry Finn is based on Mark Twain's novels The Adventures of Tom Sawyer (1876) and Adventures of Huckleberry Finn (1884).
Head entity: The Adventures of Tom Sawyer
Tail entity: Tom Sawyer & Huckleberry Finn
Relation (head \u2192 tail): based on
Inverse relation (tail \u2192 head): derivative work