The company was spun off from a soybean farmer cooperative called West Central , which built its first biodiesel plant in Ralston , Iowa , in 1996 .
Iowa /location/location/contains Ralston
DT NN VBD VBN RP IN DT NN NN JJ VBN NNP NNP , WDT VBD PRP$ JJ NN NN IN NNP , NNP , IN CD .
Iowa
LOCATION
Ralston
LOCATION
/location/location/contains