But technical innovations have aided the operators.
( But ( ( technical innovations ) ( ( have ( aided ( the operators ) ) ) . ) ) )
(ROOT (S (CC But) (NP (JJ technical) (NNS innovations)) (VP (VBP have) (VP (VBN aided) (NP (DT the) (NNS operators)))) (. .)))
Technology has helped operators.
( Technology ( ( has ( helped operators ) ) . ) )
(ROOT (S (NP (NNP Technology)) (VP (VBZ has) (VP (VBN helped) (NP (NNS operators)))) (. .)))