Editing Determiner phrase (section)

===Semantic and structural parallelism===
Despite what was stated above about parallelism across clause and DP, the traditional NP-analysis of noun phrases actually maintains parallelism in a way that is destroyed if one assumes DPs. The semantic parallelism that can be obtained across clause and NP, e.g. ''He loves water'' vs. ''his love of water'', is no longer present in the structure if one assumes DPs. The point is illustrated here first with dependency trees:

[[File:DP vs. NP 3.png|DP vs. NP 3|center]]

On the NP-analysis, ''his'' is a dependent of ''love'' in the same way that ''he'' is a dependent of ''loves''. The result is that the NP ''his love of water'' and the clause ''He loves water'' are mostly parallel in structure, which seems correct given the semantic parallelism across the two. In contrast, the DP analysis destroys the parallelism, since ''his'' becomes head over ''love''. The same point is true for a constituency-based analysis:

[[File:DP vs. NP 4.png|DP vs. NP 4|center]]

These trees again employ the convention whereby the words themselves are used as the node labels. The NP-analysis maintains the parallelism because the determiner ''his'' appears as specifier in the NP headed by ''love'' in the same way that ''he'' appears as specifier in the clause headed by ''loves''. In contrast, the DP analysis destroys this parallelism because ''his'' no longer appears as a specifier in the NP, but rather as head over the noun.