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:

Chloroquine related complete heart block with blindness: case report. A 27-year old African woman with history of regular chloroquine ingestion presented with progressive deterioration of vision, easy fatiguability, dyspnoea, dizziness progressing to syncopal attacks. Ophthalmological assessment revealed features of chloroquine retinopathy, cardiac assessment revealed features of heart failure and a complete heart block with right bundle branch block pattern. The heart block was treated by pacemaker insertion and the heart failure resolved spontaneously following chloroquine discontinuation. She however remains blind.
{"Chemical": ["chloroquine", "Chloroquine"], "Disease": ["dizziness", "heart block", "blind", "dyspnoea", "syncopal attacks", "fatiguability", "heart failure", "retinopathy", "deterioration of vision", "blindness", "right bundle branch block"]}