This characteristic is a symmetry condition imposed in the econometrics as the demand equations were developed.
A symmetry condition is the characteristic.
The demand equations were not further developed.
The lady was at home sleeping.
Increasing the Amount of Nonfederal Saving and Investment?
It was really fun.
A man is playing baseball on mars.
A skier sitting in front of the fire in the lodge.
A coach is walking on grass.