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: ["Outcome", "Participant", "Intervention"].

Please return the output as a JSON object of the format: {"Participant" : ["patients with COPD", ...], "Intervention" : ["Atenolol", ...], "Outcome" : ["blood pressure", ...]}. 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:

Anxiety sensitivity as an incremental predictor of later anxiety symptoms and syndromes . Although anxiety sensitivity ( AS ) has been shown to predict anxiety symptoms and panic , this literature is limited in regard to evaluating AS as an incremental predictor of anxiety psychopathology relative to other established risk factors including sex and negative affect . The present report prospectively evaluated whether AS was predictive of later changes in anxiety symptoms after controlling for potential confounding factors . Consistent with hypothesis , AS was found to be a significant , incremental predictor of anxiety symptoms over time , even after controlling for sex and negative affectivity . These data provide novel evidence for the unique association between AS of the development of anxiety symptoms .
{"Intervention": ["controlling for potential confounding factors", "anxiety psychopathology"], "Outcome": ["anxiety symptoms"], "Participant": ["Anxiety sensitivity", "later anxiety symptoms and syndromes", "anxiety psychopathology", "anxiety symptoms .", "anxiety sensitivity", "anxiety symptoms and panic"]}