Python - How to determine the meaning described by a sentence in a piece of text

Question

For example, if you get an article now, how can you tell whether there are words or meanings like "fake products" or "someone fell into the water" in this article? Counterfeit goods, counterfeit goods, etc. and fake products have the same meaning. If present, it can be discovered. This type is not an exact match, what method needs to be used to obtain it. Thanks~~~~

Answer 1

Regular expression, keyword list, or semantic analysis on nb point

Answer 2

word2vec finds synonyms, and then ac automatically filters them.

Answer 3

Feel regular expressions, a large number of such lexicon, and then match the content.