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:

The effect of visual supports on performance of the TGMD-2 for children with autism spectrum disorder . The purpose of this study was to examine the effects of visual supports on the performance of the Test of Gross Motor Development ( TGMD-2 ) for children with autism spectrum disorder ( ASD ) . Participants ( N = 22 ) performed the TGMD-2 under three different protocols ( traditional protocol , picture task card protocol , and picture activity schedule protocol ) . Gross motor quotient scores on the TGMD-2 were measured and statistically analyzed using a within-subjects repeated-measures ANOVA . Results indicated statistically significant differences between protocols , while post hoc tests indicated that the picture task card condition produced significantly higher gross motor quotient scores than the traditional protocol and the picture activity schedule . The results suggest that more accurate gross motor quotient scores on the TGMD-2 by children with ASD can be elicited using the picture task card protocol .
{"Intervention": ["picture task card protocol", "Test of Gross Motor Development ( TGMD-2 )", "TGMD-2", "traditional protocol", "picture activity schedule protocol"], "Outcome": ["performance", "Gross motor quotient scores", "gross motor quotient scores", "TGMD-2"], "Participant": ["22", "autism spectrum disorder", "children", "autism spectrum disorder ( ASD )", "ASD"]}