Five sources of energy – oil, coal, gas, water and wind are scheduled to be found at 5 different times of a day – 2 pm, 3 pm, 5 pm, 6 pm and 9 pm. Wind is not scheduled to be found at 3 pm. Oil is scheduled to be found at time between 3 pm and 6 pm. Coal is scheduled to be found before 5 pm. Gas is scheduled at time after 5 pm. Water is found to be available only after 6 pm.

Which source of energy is to be found at time before 3 pm?