Before revision: Interaction between Citizen and City Such a collaboration can take place through different paths: Question-answering-system: As a knowledge-based system, a question-answering-system is able to give answers to questions asked in natural language.
After revision: Interaction between citizen and city Such a collaboration can take place through different paths: Question-answering-system: As a knowledge-based system, a question-answering-system is able to give answers to questions asked in natural language.