( ( The Secretary-1 ) ( also ( ( ( inspected ( ( production process ) ( of ( oxygen gas ) ) ) ) ( at ( Oxygen ( Gas Plant ) ) ) ) . ) ) )
(ROOT (S (NP (DT The) (NN Secretary-1)) (ADVP (RB also)) (VP (VBD inspected) (NP (NP (NN production) (NN process)) (PP (IN of) (NP (NN oxygen) (NN gas)))) (PP (IN at) (NP (NNP Oxygen) (NNP Gas) (NNP Plant)))) (. .)))
The Secretary-1 also inspected production process of oxygen gas at Oxygen Gas Plant.
(ROOT (S (NP (NN Oxygen) (NN gas)) (VP (VBZ is) (VP (VBN given) (PRT (RP off)) (PP (IN by) (NP (NNS plants))))) (. .)))