Thus in (NP the Manhattan phone book and tour guide) 6 a flat structure is given because although the is a non-nominal modifier, it is shared, modifying both tour guide and phone book, and all other modifiers in the phrase are nominal.
we found that out of 1,417 examples of NP coordination in sections 02 to 21, involving phrases containing only nouns (common nouns or a mixture of common and proper nouns) and the coordinating conjunction, as many as 21.3%, contrary to the guidelines, were given internal structure, instead of a flat annotation.