The invention is a data processing method and system for notifying petroleum geoscientists of contradictions in sentiment between petroleum geoscience topic associations in text. The data processing system makes the necessary calculations to detect petroleum geoscience associations of interest, predict their sentiment and report contradictions in sentiment. Contradictions can be calibrated with past business success and failures through time, such as exploration or operations, to create a classifier to predict future areas of opportunity and risk. In particular, the data processing system operates on any digital unstructured text derived from academic literature, company reports, web pages and other sources. This information is analyzed and utilized by the system assisting petroleum geoscientists to identify business opportunities and risks.