In this paper, QASC is rebuilt as a directed science-fact graph with $16{,}444$ nodes and $25{,}590$ edges. Graph descriptors computed from the released graph and fact texts are: mean depth $2.3$, fraction of nodes with depth $\geq 1$ equal to $79.7\%$, mean degree $3.1$, and mean fact-text length $8.9$ tokens. Because the official test split withholds evidence, the paper reports only validation retrieval on the 926-question validation split. The supplement Datasets section documents the node-extraction rule, edge-construction criterion, and directionality assignment that reproduce these counts exactly. QASC functions as a distinct-domain (non-prerequisite) fact-graph control rather than as a headline prerequisite benchmark.