Task: Question Answering
Input (English): Context: One simple little duck the size of his palm took the better part of a half hour for Zack to complete , because his hands could only move so slow , and he stopped frequently to just stare at the folded mess scattered around his crossed legs and the tangled blankets . Messy , messy , he made everything a mess . And then he 'd paused again , losing the battle against self pity as his blank eyes stared at the six paper ducks around him . No , no , no . That was bad , he was n't supposed to think about that . 
Question: Why is Zack having difficulties building the paper duck ?
Output (English): Zack is sick and can not move his fingers with dexterity . .