Context: In May 2005, GE announced the launch of a program called "Ecomagination," intended, in the words of CEO Jeff Immelt "to develop tomorrow's solutions such as solar energy, hybrid locomotives, fuel cells, lower-emission aircraft engines, lighter and stronger durable materials, efficient lighting, and water purification technology". 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."

Question: When did GE announce its Ecoimagination program?
Answer: May 2005

Question: Who was the CEO of GE when it announced its Ecoimagination program?
Answer: Jeff Immelt

Question: What type of technology related to water was to be developed under the Ecoimagination program?
Answer: water purification technology

Question: Which newspaper printed an op-ed piece that questioned Immelt's credibility as a spokesman on environmental policy?
Answer: The New York Times

Question: What type of locomotive technology was to be developed by GE under its Ecoimagination program?
Answer: hybrid

Question: Who wrote an op-ed piece in the New York Times about GE's CEO in May 2005?
Answer: Unanswerable

Question: In what year did GE start polluting the environment?
Answer: Unanswerable

Question: In what year was solar energy introduced as a way to generate electricity?
Answer: Unanswerable

Question: In what year did Jeff Immelt become the CEO of GE?
Answer: Unanswerable

Question: In what year was the first hybrid locomotive introduced onto the market?
Answer: Unanswerable