You will be shown an abstract from a biomedical research paper. Given this abstract, your task is to extract all unique entities of the following types: ["Disease", "Chemical"].

Please return the output as a JSON object of the format: {"Chemical" : ["Naloxone", ...], "Disease" : ["Hypotensive", ...]}. The keys should be entity types and values should be lists of extracted entities belonging to the corresponding type. If you cannot find entities belonging to a specific type, the value should be [].

Only output the JSON object and do not include any additional text.

Abstract:

Amnestic syndrome associated with propranolol toxicity: a case report. An elderly woman developed an Alzheimer-like subacute dementia as a result of propranolol toxicity. Analysis of the manifestations showed that severe impairment of memory accounted for virtually all of the abnormalities. There is evidence that cerebral reactions to drug toxicity can exhibit patterns that suggest highly selective involvement of functional subdivisions of the brain.
{"Chemical": ["propranolol"], "Disease": ["toxicity", "dementia", "Amnestic syndrome", "Alzheimer"]}