SRL for [leaped]: Half crazed by the weight dragging , the dust , and the heat , the horse [leaped] our wall , dashing out the rider 's brains against it , and leaving him lying there among us -- while the horse crashed away through the brush .
ARG-M-PRD: Half crazed by the weight dragging , the dust , and the heat | ARG-0: the horse | ARG-1: our wall | ARG-M-ADV: dashing out the rider 's brains against it , and leaving him lying there among us -- while the horse crashed away through the brush