DENOM (denomination) is a functor for the effective root of an independent nominative clause, which is not a parenthesis.
DENOM functor is assigned to the node representing the governing noun (in the nominative case) of an independent nominative clause, if it is not a parenthesis. Independent nominative clauses are defined in Section 4.2, "Non-verbal clauses". The same section also describes the possible forms of the governing noun, which is represented by a node with the
DENOM čtenářů. (=lit. Opinions of_readers.) Fig. 7.2
For more examples see Section 4.2, "Non-verbal clauses".