source: [tag=IN] [lemma=the] [lemma=□] □
destination: [tag=IN] [lemma=the] [lemma=stone] □
spec: A sudden stream of dirt and pebbles rattled down through the timbers , bouncing across the stone floor . We acknowledge SJI 's efforts to collect short-term recidivism data . Shortly afterwards the Kahars16 arrived , carrying poor Mr. Brackenbury on a mattress , and the others followed fast , so that the small cellar was very soon quite full of men lying side by side on the stone floor . Apart from providing a structured hierarchy , the other major role of a BeanContext is to provide a standard mechanism for a JavaBean component to obtain context-specific facilities or services from its environment .