In this paper, QASC is rebuilt as a directed science fact graph with $16{,}444$ nodes and $25{,}590$ edges, giving a much larger and structurally different substrate than the two curated prerequisite DAGs. Because the official QASC test split withholds evidence, the paper reports retrieval results only on the $926$-question validation split. Graph descriptors are: mean depth $2.3$, fraction of nodes with depth $\geq 1$ equal to $79.7\%$, mean degree $3.1$, and mean text length $8.9$ tokens.