{
  "entities": [
    {
      "name": "Mathematics",
      "type": "Subject"
    },
    {
      "name": "Lower Secondary Education",
      "type": "Education Level"
    },
    {
      "name": "Fifth Grade",
      "type": "Grade Level"
    },
    {
      "name": "Sixth Grade",
      "type": "Grade Level"
    },
    {
      "name": "Natural Numbers",
      "type": "Mathematical Concept"
    },
    {
      "name": "Geometry",
      "type": "Subject"
    },
    {
      "name": "Plane Figures",
      "type": "Mathematical Concept"
    },
    {
      "name": "Spatial Figures",
      "type": "Mathematical Concept"
    },
    {
      "name": "Triangle",
      "type": "Shape"
    },
    {
      "name": "Square",
      "type": "Shape"
    },
    {
      "name": "Rectangle",
      "type": "Shape"
    },
    {
      "name": "Cube",
      "type": "Shape"
    },
    {
      "name": "Cuboid",
      "type": "Shape"
    },
    {
      "name": "Decimal Numbers",
      "type": "Mathematical Concept"
    },
    {
      "name": "Arithmetic Operations",
      "type": "Mathematical Concept"
    },
    {
      "name": "Divisibility",
      "type": "Mathematical Concept"
    },
    {
      "name": "Symmetry",
      "type": "Mathematical Concept"
    },
    {
      "name": "Data Handling",
      "type": "Mathematical Concept"
    },
    {
      "name": "Area",
      "type": "Mathematical Concept"
    },
    {
      "name": "Volume",
      "type": "Mathematical Concept"
    },
    {
      "name": "Angles",
      "type": "Mathematical Concept"
    },
    {
      "name": "Ruler",
      "type": "Tool"
    },
    {
      "name": "Compass",
      "type": "Tool"
    },
    {
      "name": "Protractor",
      "type": "Tool"
    },
    {
      "name": "Calculator",
      "type": "Tool"
    }
  ],
  "relations": [
    {
      "source": "Lower Secondary Education",
      "target": "Mathematics",
      "relation": "contains"
    },
    {
      "source": "Fifth Grade",
      "target": "Lower Secondary Education",
      "relation": "part_of"
    },
    {
      "source": "Sixth Grade",
      "target": "Lower Secondary Education",
      "relation": "part_of"
    },
    {
      "source": "Fifth Grade",
      "target": "Natural Numbers",
      "relation": "teaches"
    },
    {
      "source": "Fifth Grade",
      "target": "Geometry",
      "relation": "teaches"
    },
    {
      "source": "Sixth Grade",
      "target": "Decimal Numbers",
      "relation": "teaches"
    },
    {
      "source": "Sixth Grade",
      "target": "Arithmetic Operations",
      "relation": "teaches"
    },
    {
      "source": "Sixth Grade",
      "target": "Divisibility",
      "relation": "teaches"
    },
    {
      "source": "Sixth Grade",
      "target": "Symmetry",
      "relation": "teaches"
    },
    {
      "source": "Sixth Grade",
      "target": "Data Handling",
      "relation": "teaches"
    },
    {
      "source": "Sixth Grade",
      "target": "Area",
      "relation": "teaches"
    },
    {
      "source": "Sixth Grade",
      "target": "Volume",
      "relation": "teaches"
    },
    {
      "source": "Sixth Grade",
      "target": "Angles",
      "relation": "teaches"
    },
    {
      "source": "Geometry",
      "target": "Plane Figures",
      "relation": "contains"
    },
    {
      "source": "Geometry",
      "target": "Spatial Figures",
      "relation": "contains"
    },
    {
      "source": "Triangle",
      "target": "Plane Figures",
      "relation": "is_a"
    },
    {
      "source": "Square",
      "target": "Plane Figures",
      "relation": "is_a"
    },
    {
      "source": "Rectangle",
      "target": "Plane Figures",
      "relation": "is_a"
    },
    {
      "source": "Cube",
      "target": "Spatial Figures",
      "relation": "is_a"
    },
    {
      "source": "Cuboid",
      "target": "Spatial Figures",
      "relation": "is_a"
    },
    {
      "source": "Arithmetic Operations",
      "target": "Natural Numbers",
      "relation": "uses"
    },
    {
      "source": "Decimal Numbers",
      "target": "Natural Numbers",
      "relation": "requires"
    },
    {
      "source": "Geometry",
      "target": "Ruler",
      "relation": "uses"
    },
    {
      "source": "Geometry",
      "target": "Compass",
      "relation": "uses"
    },
    {
      "source": "Angles",
      "target": "Protractor",
      "relation": "uses"
    },
    {
      "source": "Arithmetic Operations",
      "target": "Calculator",
      "relation": "uses"
    },
    {
      "source": "Area",
      "target": "Geometry",
      "relation": "depends_on"
    },
    {
      "source": "Volume",
      "target": "Geometry",
      "relation": "depends_on"
    }
  ]
}