13 2 0 http://purl.obolibrary.org/obo/NCIT_C67123 1st Grade Completion '1st Grade Completion' SubClassOf 'less than 8th grade completion' '1st Grade Completion' SubClassOf http://purl.obolibrary.org/obo/OPMI_0000020 http://purl.obolibrary.org/obo/NCIT_C67124 2nd Grade Completion '2nd Grade Completion' SubClassOf 'less than 8th grade completion' '2nd Grade Completion' SubClassOf http://purl.obolibrary.org/obo/OPMI_0000020 http://purl.obolibrary.org/obo/NCIT_C67125 3rd Grade Completion '3rd Grade Completion' SubClassOf 'less than 8th grade completion' '3rd Grade Completion' SubClassOf http://purl.obolibrary.org/obo/OPMI_0000020 http://purl.obolibrary.org/obo/NCIT_C67126 4th Grade Completion '4th Grade Completion' SubClassOf 'less than 8th grade completion' '4th Grade Completion' SubClassOf http://purl.obolibrary.org/obo/OPMI_0000020 http://purl.obolibrary.org/obo/NCIT_C67127 5th Grade Completion '5th Grade Completion' SubClassOf 'less than 8th grade completion' '5th Grade Completion' SubClassOf http://purl.obolibrary.org/obo/OPMI_0000020 http://purl.obolibrary.org/obo/NCIT_C67128 6th Grade Completion '6th Grade Completion' SubClassOf 'less than 8th grade completion' '6th Grade Completion' SubClassOf http://purl.obolibrary.org/obo/OPMI_0000020 http://purl.obolibrary.org/obo/NCIT_C67129 7th Grade Completion '7th Grade Completion' SubClassOf 'less than 8th grade completion' '7th Grade Completion' SubClassOf http://purl.obolibrary.org/obo/OPMI_0000020 http://purl.obolibrary.org/obo/NCIT_C67130 8th Grade Completion '8th Grade Completion' SubClassOf 'less than 12th grade completion' '8th Grade Completion' SubClassOf http://purl.obolibrary.org/obo/OPMI_0000017 http://purl.obolibrary.org/obo/NCIT_C67131 9th Grade Completion '9th Grade Completion' SubClassOf 'less than 12th grade completion' '9th Grade Completion' SubClassOf http://purl.obolibrary.org/obo/OPMI_0000017 http://purl.obolibrary.org/obo/NCIT_C67132 10th Grade Completion '10th Grade Completion' SubClassOf 'less than 12th grade completion' '10th Grade Completion' SubClassOf http://purl.obolibrary.org/obo/OPMI_0000017 http://purl.obolibrary.org/obo/NCIT_C67133 11th Grade Completion '11th Grade Completion' SubClassOf 'less than 12th grade completion' '11th Grade Completion' SubClassOf http://purl.obolibrary.org/obo/OPMI_0000017 http://purl.obolibrary.org/obo/OPMI_0000001 less than 8th grade completion 'less than 8th grade completion' SubClassOf 'Education Level' 'less than 8th grade completion' SubClassOf 'process' http://purl.obolibrary.org/obo/OPMI_0000002 less than 12th grade completion 'less than 12th grade completion' SubClassOf 'Education Level' 'less than 12th grade completion' SubClassOf 'investigation' http://purl.obolibrary.org/obo/OPMI_0000017 less than 12th grade completion 'less than 12th grade completion' SubClassOf 'Education Level' http://purl.obolibrary.org/obo/OPMI_0000020 less than 8th grade completion 'less than 8th grade completion' SubClassOf 'Education Level'