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:

patients with a diagnosis of either cervical, thoracic, or lumbar facet or sacroiliac joint pain who have responded to medial branch blocks and are already scheduled for bilateral radiofrequency ablations
age greater than 18 years old
English speaking
{"Condition": ["cervical joint pain", "sacroiliac joint pain", "lumbar facet joint pain", "thoracic joint pain"], "Device": [], "Drug": [], "Measurement": [], "Mood": ["scheduled for"], "Multiplier": [], "Negation": [], "Observation": ["English speaking", "responded"], "Person": ["age"], "Procedure": ["bilateral radiofrequency ablations", "medial branch blocks"], "Qualifier": [], "ReferencePoint": [], "Scope": ["cervical, thoracic, or lumbar facet or sacroiliac joint pain"], "Temporal": [], "Value": ["greater than 18 years old"], "Visit": []}