IT+VERB(PASSIVE)+SUBJECT=BE- VERB +BEING +RED=(IT IS BELIEVED) (BEING RED) (CAUSED THE BULL TO FIGHT.)
-------= NOUN CLAUSE INVOLOVED IN THE PATTERN.
Subject +be +complement
=I am not brave.
=adjective=brave
=a brave person.;
not=adverb=expressing negation, refusal, denial; Not positive.