Title or description with a name: nmod:desc; with an article — appos

Gist. When a "bare" description stands before a name — a position, title or role without an article (President Obama, spokesman John Smith, actor Martin Sheen) — it is a descriptor. When the description has an article, possessive or numeral (my friend Nick, the poet Burns), it is a full apposition. Poutsma (vol. 1, IV §6 b) describes a similar type the planet Mars, the man Moses: the first word alone does not give the full meaning. Conditions and exceptions. A descriptor can be dropped without harming the grammar. Suffixes Jr., Inc., LLC, Corp. after a name are also descriptors (to the right). Examples. Dr. Smith → nmod:desc(Smith, Dr.); my friend Nick → appos(friend, Nick); Apple Inc. → nmod:desc(Apple, Inc.). In UD. nmod:desc — without det, nmod:poss, nummod (EWT 2.18: 437 of 439); the head is PROPN (439 of 439). A description with a determiner before a name is appos from the description to the name (EWT: 58 of 73 such appos have det/nmod:poss). Sources. UD docs/_en/dep/nmod-desc.md; Poutsma GLME vol. 1, Ch. IV §6 b (books/p/po/poutsma-1904-grammar-late-modern-english/text-1.md, p. 291); Curme 1931 §10 III "Close apposition" (books/c/cu/curme-1931-grammar-english-language-vol/text-1.md, p. 91).

rule: en.nominal.desc-bare
what: the descriptor nmod:desc is a "bare" noun without determiner, possessive or numeral
match: t[rel=nmod:desc]
require: none c[rel~det, head=t]; none c[rel=nmod:poss, head=t]; none c[rel=nummod, head=t]
severity: error
source: UD en nmod:desc

rule: en.nominal.desc-head-propn
what: nmod:desc depends on a proper name
match: h[]; t[rel=nmod:desc, head=h]
require: h[upos=PROPN]
severity: warn
source: UD en nmod:desc

This page in Markdown → https://md.mova.elamur.ai/free/en/docs/en/seeds/nominal/nmod-desc/