"PIE" . "?" . _:B734d79a7X3A195d1e795f5X3AX2D46e6 . "*ser‑e/o‑" . "Etymology for: serō (la1497)" . "*ser‑e/o‑" . . _:B734d79a7X3A195d1e795f5X3AX2D46e6 "*ser‑e/o‑" .