```json
{
  "claims": [
    {
      "claim": "Aortic aneurysms in Loeys-Dietz syndrome dissect at smaller diameters than in Marfan syndrome.",
      "quote": "Aortic aneurysms in Loeys-Dietz syndrome dissect at smaller diameters than in Marfan syndrome",
      "subject": "Aortic aneurysms in Loeys-Dietz syndrome",
      "predicate": "dissect at",
      "object": "smaller diameters than in Marfan syndrome",
      "negated": false,
      "qualifier": null,
      "subject_qualifier": null,
      "object_qualifier": null,
      "entities": ["Loeys-Dietz syndrome", "Marfan syndrome", "aortic aneurysms"],
      "citations": ["[2]"],
      "about": "domain",
      "basis": "secondary_source"
    },
    {
      "claim": "Surgery is recommended earlier in Loeys-Dietz syndrome for aortic aneurysms.",
      "quote": "so surgery is recommended earlier",
      "subject": "surgery",
      "predicate": "is recommended",
      "object": "earlier in Loeys-Dietz syndrome",
      "negated": false,
      "qualifier": null,
      "subject_qualifier": null,
      "object_qualifier": null,
      "entities": ["Loeys-Dietz syndrome"],
      "citations": [],
      "about": "domain",
      "basis": "background_knowledge"
    },
    {
      "claim": "Arterial tortuosity of the head and neck vessels is a hallmark of Loeys-Dietz syndrome.",
      "quote": "Arterial tortuosity, e.g. of the head and neck vessels, is a hallmark of the disorder.",
      "subject": "Arterial tortuosity of the head and neck vessels",
      "predicate": "is",
      "object": "a hallmark of Loeys-Dietz syndrome",
      "negated": false,
      "qualifier": null,
      "subject_qualifier": null,
      "object_qualifier": null,
      "entities": ["Loeys-Dietz syndrome", "arterial tortuosity", "head and neck vessels"],
      "citations": ["[3]"],
      "about": "domain",
      "basis": "secondary_source"
    }
  ]
}
```