You will be shown inclusion or exclusion criteria for a clinical trial. Given these criteria, your task is to extract all unique entities of the following types: ["Observation", "Condition", "Procedure", "Drug", "Temporal", "Multiplier", "Qualifier", "Negation", "ReferencePoint", "Scope", "Value", "Mood", "Device", "Visit", "Measurement", "Person"].

Please return the output as a JSON object of the format: {"Condition" : ["breast cancer", ...], "Device" : ["ports", ...], "Drug" : ["Atenolol", ...], "Measurement" : ["blood pressure", ...], "Mood" : ["suspected", ...], "Multiplier" : ["more than two", ...], "Negation" : ["no", ...], "Observation" : ["history", ...], "Person" : ["male", ...], "Procedure" : ["surgery", ...], "Qualifier" : ["severe", ...], "ReferencePoint" : ["enrollment", ...], "Scope" : ["infection", ...], "Temporal" : ["one day", ...], "Value" : ["50%", ...], "Visit" : ["ICU", ...]}. 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:

Subjects who voluntarily consented, after listening enough explanation for this study and investigational product.
Adult over 50 years of age.
At least one of the knee pain VAS score is 40mm or more.
Patients who require medication for more than 12 weeks due to osteoarthritis symptoms.
Those who are able to follow the requirements of this clinical trial, such as being able to trace during the clinical trial period and to read and write the VAS questionnaire.
Those who weigh more than 40kg
{"Condition": ["knee pain", "osteoarthritis symptoms"], "Device": [], "Drug": ["medication"], "Measurement": ["weigh", "VAS score"], "Mood": [], "Multiplier": ["At least one", "more than 12 weeks"], "Negation": [], "Observation": [], "Person": ["age", "Adult"], "Procedure": [], "Qualifier": [], "ReferencePoint": [], "Scope": [], "Temporal": [], "Value": ["40mm or more", "more than 40kg", "over 50 years"], "Visit": []}