statement qualifier Most commonly used with a "NOT" value to negate a statement - i.e. indicate that the claim implied by its strucuted representation is not true. For example, the negation qualifier on the following OBAN-style association would make the claim that BRCA2 is NOT linked to the phenotype 'abnormal lymphocyte count': <:assertion1> a OBAN:association; OBAN:association_has_object HP_0040088 (abnormal lymphocyte count); OBAN:association_has_predicate RO:0002200 (has_phenotype); OBAN:association_has_subject HGNC:1101 (BRCA2); SEPIO:0000346(quallifier) "NOT". A relation used to qualify the meaning of a statement.