Dates, times, addresses, currency, numbers in v2 guidelines and English data

[nschneid]

Some observations:

• Currency: A currency symbol should be related to a numeric amount via nummod (e.g. in "$ 40"), but in the English data it is sometimes compound.

• Dates: flat includes examples of dates, but the English data has nummod (e.g., “March 28”)

• Times: There is no apparent guideline for "10:00 pm" or "10 o'clock". In the English data, "a.m." and "p.m." are attached as nummod.

• Addresses: It is not clear what the standard should be—flat?—for expressions like "100 Main St. NW Apt. 10".

• Spelled-out numbers: flat gives the example "four thousand", but the English data has compound (e.g., these examples with "million")

[dan-zeman]

We should discuss whether listing dates as an example of flat was a mistake or we really want to change the previous approach. We should also create a documentation page dedicated to dates. As a matter of fact, there has been a long discussion in #113 and especially in #210.

[jnivre]

Agreed. I have made this a v2.1 milestone.

[nschneid]

From skimming #210, it seems that different syntactic constructions can become conventional ways to express dates. Perhaps the best solution would be not to force a uniform structure, but to subtype relations with :date to reflect their common function.

Thus, for English, something like:

Thursday, July 4, 1776
nummod:date(July, 4)
nmod:date(July, Thursday)
nummod:date(July, 1776)

Thursday, the 4th of July, 1776
det(4th, the)
nmod:date(4th, July)
case(July, of)
nmod:date(4th, Thursday)
nummod:date(4th, 1776)

While the head is "July" in the first case and "4th" in the second case, in both cases the 4 pieces of the date (weekday, month, date, year) are connected via relations with :date subtyping.