I want to know the answer to the following question:
Which newspaper printed an op-ed piece that questioned Immelt's credibility as a spokesman on environmental policy?
All the background I'm provided with is that "The announcement prompted an op-ed piece in The New York Times to observe that, "while General Electric's increased emphasis on clean technology will probably result in improved products and benefit its bottom line, Mr. Immelt's credibility as a spokesman on national environmental policy is fatally flawed because of his company's intransigence in cleaning up its own toxic legacy."". Is that enough to answer the question?