atoms:
{'ancestors': 'NONE',
 'attributes': 'NONE',
 'children': 'NONE',
 'classType': 'Atom',
 'code': 'https://uts-ws.nlm.nih.gov/rest/content/2020AA/source/MTH/NOCODE',
 'concept': 'https://uts-ws.nlm.nih.gov/rest/content/2020AA/CUI/C0018787',
 'descendants': 'NONE',
 'language': 'ENG',
 'name': 'Heart',
 'obsolete': 'false',
 'parents': 'NONE',
 'relations': 'NONE',
 'rootSource': 'MTH',
 'sourceConcept': 'NONE',
 'sourceDescriptor': 'NONE',
 'suppressible': 'false',
 'termType': 'PN',
 'ui': 'A0066369'}
a few relations:
[{'additionalRelationLabel': 'is_associated_anatomic_site_of',
  'attributeCount': 0,
  'classType': 'AtomClusterRelation',
  'groupId': 'NONE',
  'obsolete': False,
  'relatedFromId': 'https://uts-ws.nlm.nih.gov/rest/content/2020AA/source/NCI/C12727',
  'relatedFromIdName': 'Heart',
  'relatedId': 'https://uts-ws.nlm.nih.gov/rest/content/2020AA/source/NCI/C53652',
  'relatedIdName': 'Acute Coronary Syndrome',
  'relationLabel': 'RO',
  'rootSource': 'NCI',
  'sourceOriginated': False,
  'sourceUi': 'NONE',
  'suppressible': False,
  'ui': 'R169323997'},
 {'additionalRelationLabel': 'finding_site_of',
  'attributeCount': 0,
  'classType': 'AtomClusterRelation',
  'groupId': 'NONE',
  'obsolete': False,
  'relatedFromId': 'https://uts-ws.nlm.nih.gov/rest/content/2020AA/source/SNOMEDCT_US/80891009',
  'relatedFromIdName': 'Heart structure',
  'relatedId': 'https://uts-ws.nlm.nih.gov/rest/content/2020AA/source/SNOMEDCT_US/394659003',
  'relatedIdName': 'Acute coronary syndrome',
  'relationLabel': 'RO',
  'rootSource': 'SNOMEDCT_US',
  'sourceOriginated': False,
  'sourceUi': '4599174022',
  'suppressible': False,
  'ui': 'R132212875'}]