In 1958 , Weinberg made the discovery of Hitler 's so - called " Zweites Buch " ( Second Book ) , an unpublished sequel to " Mein Kampf " , among captured German files .
Head entity: mein kampf Q48244 27 28
Tail entity: zweites buch Q706852 14 15
Relation (head \u2192 tail): P156
Inverse relation (tail \u2192 head): P155