query: Science Fiction Book: two alien factions fighting, eventually humans get involved
positive_passages.docid: 21253
positive_passages.text: Book wherein humans were most dangerous/aggressive of numerous species
negative_passages.docid: 68229
negative_passages.text: Mysterious contact by advanced aliens; leaves humans insane
negative_passages.docid: 116130
negative_passages.text: Novel about rendezvous with alien ship travelling through the solar system
negative_passages.docid: 60657
negative_passages.text: Title of a book telling about people teleported to a hostile planet while in deep meditation
negative_passages.docid: 93979
negative_passages.text: Help Identifying a Sci-Fi Book: Humans transported to alien world and given tasks to escape
negative_passages.docid: 82943
negative_passages.text: Book where humans on another planets are cannibals
negative_passages.docid: 55796
negative_passages.text: Story about space explorers who communicate but then decide they must destroy each other
negative_passages.docid: 101629
negative_passages.text: Story about a man and an alien exploring an alien world
negative_passages.docid: 38857
negative_passages.text: Story Identification: Human Resistance to Conquering Aliens
negative_passages.docid: 61327
negative_passages.text: Book about a kingdom invaded by another world
negative_passages.docid: 29564
negative_passages.text: Trying to remember a book about a human male travelling to alien planet
negative_passages.docid: 54867
negative_passages.text: Trying to find a book about kids with 'sunguns' revolting against alien overlords
negative_passages.docid: 2726
negative_passages.text: Book Identification: Dragons as war machines
negative_passages.docid: 17712
negative_passages.text: Short story about aliens that are parts of a spaceship
negative_passages.docid: 33607
negative_passages.text: SF TV show about a war between humans and aliens?
negative_passages.docid: 144125
negative_passages.text: Sci-fi Novel about human starship fighting alien starships with FTL "warp bubble" missiles?
negative_passages.docid: 26229
negative_passages.text: Looking for story - post human galactic civilization