Task: Question Understanding
Input (English): We call this lifelong interactive learning and inference (LiLi). Lifelong learning is reflected by the facts that the newly acquired facts are retained in the KB and used in inference for future queries, and that the accumulated knowledge in addition to the updated KB including past inference performances are leveraged to guide future interaction and learning. 
 Question: In what way does LiLi imitate how humans acquire knowledge and perform inference during an interactive conversation?
Output (English): Extractive