{
    "name": "Continual Relation Extraction",
    "children": [
     {
      "name": "Continual Learning",
      "children": [
       {"name": "Continual Learning"},
       {"name": "Lifelong Learning"},
       {"name": "Incremental Learning"},
       {"name": "Continuous Learning"},
       {"name": "Online Learning"}
      ]
     },
     {
         "name": "Relation Extraction",
         "children": [
          {"name": "Relation Extraction"},
          {"name": "Relation Discovery"},
          {"name": "Relationship Extraction"},
          {"name": "Relation Detection"},
          {"name": "Dynamic Relation Extraction"}
         ]
        },
        {
            "name": "Dynamic Data Streams",
            "children": [
             {"name": "Data Streams"},
             {"name": "Streaming Data"},
             {"name": "Real-time Data"},
             {"name": "Continuous Data"},
             {"name": "Dynamic Data"}
            ]
           },
           {
            "name": "Real-world Applications",
            "children": [
             {"name": "Real-world Data"},
             {"name": "Natural Language Processing in Real-world"},
             {"name": "Real-time Data"},
             {"name": "NLP in Dynamic Environments"},
             {"name": "Information Extraction from Real-world Data"},
             {"name": "Practical Applications of Continual Learning"}
            ]
           },
           {
            "name": "New Relation Types",
            "children": [
             {"name": "New Relation Types"},
             {"name": "Novel Relation Discovery"},
             {"name": "Emerging Relations"},
             {"name": "Adaptive Relation Extraction"},
             {"name": "Discovering Unknown Relations"}
            ]
           },
           {
            "name": "Combining Concepts",
            "children": [
             {"name": "Continuous Discovery of Relation Types"},
             {"name": "Incremental Relation Extraction from Data Streams"},
             {"name": "Lifelong Learning for Dynamic Relation Detection"},
             {"name": "Real-time Relation Extraction in NLP"},
             {"name": "Adaptive Learning for Relation Discovery in Streaming Data"}
            ]
           }

    ]
}