An example of capturing whether the mother is trained to change her child's tracheostomy tube. In this example, the child is the patient of record and the mother is the focus.

{
  "resourceType": "Observation",
  "id": "trachcare",
  "text": {
    "status": "generated",
    "div": "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative: Observation</b><a name=\"trachcare\"> </a></p><div style=\"display: inline-block; background-color: #d9e0e7; padding: 6px; margin: 4px; border: 1px solid #8da1b4; border-radius: 5px; line-height: 60%\"><p style=\"margin-bottom: 0px\">Resource Observation &quot;trachcare&quot; </p></div><p><b>status</b>: final</p><p><b>category</b>: Exam <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"http://terminology.hl7.org/3.1.0/CodeSystem-observation-category.html\">Observation Category Codes</a>#exam)</span></p><p><b>code</b>: Tracheostomy care assessment (procedure) <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"https://browser.ihtsdotools.org/\">SNOMED CT</a>#410211008)</span></p><p><b>subject</b>: <a href=\"broken-link.html\">Patient/infant</a></p><p><b>focus</b>: <a href=\"patient-example-infant-mom.html\">Patient/infant-mom</a> &quot;Leia SOLO&quot;</p><p><b>effective</b>: 2018-03-11T16:07:54Z</p><p><b>value</b>: Mother is trained to change her child's tracheostomy tube</p></div>"
  },
  "status": "final",
  "category": [
    {
      "coding": [
        {
          "system": "http://terminology.hl7.org/CodeSystem/observation-category",
          "code": "exam",
          "display": "Exam"
        }
      ],
      "text": "Exam"
    }
  ],
  "code": {
    "coding": [
      {
        "system": "http://snomed.info/sct",
        "code": "410211008",
        "display": "Tracheostomy care assessment (procedure)"
      }
    ]
  },
  "subject": {
    "reference": "Patient/infant"
  },
  "focus": [
    {
      "reference": "Patient/infant-mom"
    }
  ],
  "effectiveDateTime": "2018-03-11T16:07:54+00:00",
  "valueString": "Mother is trained to change her child's tracheostomy tube"
}