Take the following as truth: Only some jasper had such a good idea as to that what an' where, he an' some amigos was squattin' back of rocks jus' waitin' for th' Coronel to ride into their little pocket of fire." 
Then the following statement: "The Coronel was set up to be ambushed by jasper and some outlaws. He was warned at the last minute." is true, false, or inconclusive?