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:

Randomized trial of tailored skin cancer prevention for children : the Project SCAPE family study . This study evaluated a tailored intervention to promote sun protection in parents and their children , hypothesizing that the tailored intervention would lead to improved skin cancer prevention behaviors compared to generic materials . Families were recruited through schools and community centers and were included if there was 1 child in Grades 1-3 at moderate to high risk for skin cancer . Participants were randomized into one of two intervention groups : a tailored intervention , in which they received personalized skin cancer education through the mail ; or a control group who received generic skin cancer information materials . Before and after intervention , parents completed questionnaires about their and their children 's skin cancer risk and prevention knowledge and behaviors . Parents also completed 4-day sun exposure and protection diaries for their child and themselves . Tailored group participants demonstrated significantly greater positive changes in prevention behavior after the intervention , including children 's use of sunscreen , shirts , and hats , and parents ' use of shade , and skin examinations . Effect sizes were small and perceived benefits and social norms mediated intervention effects . Findings from this study support the efficacy of focusing tailored communications to families in order to change skin cancer prevention practices in young children .
{"Intervention": ["received personalized skin cancer education through the mail", "control group", "tailored intervention", "generic skin cancer information materials"], "Outcome": ["significantly greater positive changes in prevention behavior", "improved skin cancer prevention behaviors", "small and perceived benefits and social norms mediated intervention effects .", "children \u0027s use of sunscreen , shirts , and hats , and parents \u0027 use of shade , and skin examinations ."], "Participant": ["young children", "Grades 1-3 at moderate to high risk for skin cancer", "skin cancer", "parents", "children"]}