The proper D connection
We examine the concepts “proper” and “common” to determine how they are encoded in noun phrases. We address the issue of the noun-determiner relation in fixing the value of a noun phrase, arguing that both noun class and determiner features are involved. We suggest that in both definite common and proper noun phrases, NP is topped with a DP. In the former case, the DP contains the overt definite determiner <i>the</i> (in English), which is unmarked for any proper value as well as for number. In the latter, the DP also contains a definite determiner, which is null in English but not in all languages. This determiner has the features [proper] and [singular], which restrict it to appearing with singular NPs with a [name] feature.