query: Children's science fiction book 1960s?
positive_passages.docid: 86853
positive_passages.text: Novel about alien conquerers who conduct games to select servants
negative_passages.docid: 141943
negative_passages.text: 80s/90s book where boy stumbles on game where aliens gamble their planets
negative_passages.docid: 147153
negative_passages.text: Need help identifying science fiction short story about a board game
negative_passages.docid: 25559
negative_passages.text: Fantasy Short Story that appeared in an anthology about 1968-1971
negative_passages.docid: 29564
negative_passages.text: Trying to remember a book about a human male travelling to alien planet
negative_passages.docid: 80194
negative_passages.text: Looking for a Sci-Fi novel - 50s-80s, canine aliens, shaped poetry
negative_passages.docid: 58614
negative_passages.text: Book about space alien cats
negative_passages.docid: 155471
negative_passages.text: Early 80s anthology book about human kind being feared by other races in space
negative_passages.docid: 96055
negative_passages.text: Finding a book with a man from the future being reincarnated on Earth in past times
negative_passages.docid: 90407
negative_passages.text: Great Theorem - Help name the Sci-fi book read long ago
negative_passages.docid: 150922
negative_passages.text: Identification of a sci-fi book or book series based on the description of two alien races
negative_passages.docid: 127437
negative_passages.text: Book where FTL is generally invented in the bronze age
negative_passages.docid: 158928
negative_passages.text: Looking for a book, wormhole, space ship Crash landing
negative_passages.docid: 87219
negative_passages.text: Can't seem to find a childhood book that involved Egyptian gods
negative_passages.docid: 76448
negative_passages.text: Novel about a replica of earth where history happened slightly differently after the ~1940s
negative_passages.docid: 29891
negative_passages.text: 1970s space cadet training novel for young adults
negative_passages.docid: 36027
negative_passages.text: Can someone identify this book, where children are bred for specific jobs?