Normally, these pieces of information (i.e., nuggets) explain different facets of the definiendum (e.g., "ballet choreographer" and "born in Bordeaux"), and the main idea consists in projecting the acquired nuggets into the set of answer candidates afterwards.
the performance of this category of method falls into sharp decline whenever few or no coverage is found across KBs (Zhang et al., 2005;Han et al., 2006).