Definition: In this task, five ordered key facts are given. All the given facts are expressed in natural language. Your job is to generate a story 100 to 1000 words long, that includes all the facts given as input in their order of appearance while expanding upon them to produce a broader, yet coherent, narrative.
Input: Fact1: One-Eye causes massive stampede to kill Speckles siblings in to usurp territory, Fact2: Speckles and Blue-Eyes Over attempt to maintain hunting territory away from One-Eye years, Fact3: family is happy until forced to flee from territory due to volcanic eruption, Fact4: Blue-Eyes dies from injury forcing Speckles to leave body in to save children, Fact5: herd After arrives at new fertile area long journey

80 million years ago, during the Cretaceous period, a young Tarbosaurus named Speckles, for his unique birthmark, lives with his older brother, Quicks, twin sisters, and mother. Speckles is left alone when a rogue Tyrannosaurus named OneEye causes a massive stampede to kill Speckles siblings, and personally kills his mother, in order to usurp their territory. Four years later, Speckles has scraped by on his own, scavenging and raiding nests. One day while attempting to steal food from OneEye, Speckles encounters a female Tarbosaurus named BlueEyes and the pair team up to hunt and survive together. Over the years, Speckles and BlueEyes attempt to maintain a hunting territory away from OneEye. Eventually, however, OneEye discovers their hunting grounds and again attempts to usurp their territory. After BlueEyes is hurt by OneEye, Speckles fights him, and eventually defeats and drives away his old nemesis. After defeating OneEye, Speckles and BlueEyes reclaim Speckles old family nest and hunting grounds. Now a mature adult pair with three young offspring, the family is happy until forced to flee from their territory due to a volcanic eruption. During the disaster, one of the children is killed and BlueEyes is wounded. After this, Speckles becomes the de facto alpha of a large migratory herd of dinosaurs fleeing the natural disaster. Two weeks into the journey, BlueEyes collapses from exhaustion. Seeing this, a pack of Velociraptors attacks the family, and though Speckles tries to hold them off, BlueEyes dies from her injury, forcing Speckles to leave her body behind in order to save their children. After a long journey, the herd arrives at a new, fertile area in which to settle. However, Speckles once again encounters OneEye, who has been driven out by the same natural disaster. Just as he did before, OneEye causes the herbivores to stampede in order to ambush Speckles and his two babies. OneEye kills another child and remaining child, Speckles Jr., is knocked off a cliff into the ocean during the ensuing fight. Speckles dives into the sea to save him, but pursued by OneEye. After a long fight in the ocean, One Eye is attacked and eaten by a pair of Tylosaurus. Speckles eventually reaches Speckles Jr. and returns him safely to shore. In the closing monologue, Speckles wishes a peaceful, happy life for his son.