[Documentation] Elaborating on the Eventive case; moving the section …

…on the Propositional case, modifying its description and adding an example sentence.

grammar/src/morphology/roles/noun-roles.md

@@ -63,12 +63,13 @@ IC ≝ Internal/inner case
 
 Other core cases:  
 ```  
-┌─────────────┬─────┬─────┐  
-│ Extensional │  q  │  o  │   
-│ Eventive    │  š  │  ï  │  
-│ Situative   │  tʰ │  eo │  
-│ Sequential  │  ŋ  │     │  
-└─────────────┴─────┴─────┘  
+┌───────────────┬─────┬─────┐  
+│ Extensional   │  q  │  o  │   
+│ Eventive      │  š  │  ï  │  
+│ Propositional │  ł  │     │
+│ Situative     │  tʰ │  eo │  
+│ Sequential    │  ŋ  │     │  
+└───────────────┴─────┴─────┘  
 ```  
 
 In the first table of cases above, the cases shown are ordered according to an animacy and temporal/causal hierarchy: the first case listed represents the most animate participant, or the one triggering or exercicing the most control over the event described by the predicate, or occasionally, in the case of stative relations, it may be the largest or most concrete participant. Abstract propositions, properties and relations have lowest rank in this hierarchy, and will typically be associated with the last cases of each case list.  
@@ -155,7 +156,7 @@ Below is an explanation of the functions of the other core cases mentioned in th
 └─
 ```
 
-• The Eventive Case may appear with pretty much any verb; it marks a noun that refers to a spatiotemporal event corresponding to the abstract proposition expressed by the verb.  
+• The Eventive Case may appear with pretty much any verb; it marks a noun that refers to a concrete spatiotemporal event corresponding to the abstract proposition expressed by the verb. Its purpose is much comparable to that of manner adverbs in English, expressing a quality of an event, such as “suddenly”, “beautifully”, “surprisingly”…  
 
 ```
 ┌───────────────
@@ -170,6 +171,16 @@ Below is an explanation of the functions of the other core cases mentioned in th
 └─
 ```
 
+• The Propositional Case is much similar to the Eventive case above, but describes the abstract proposition represented by the current clause, and not describing its concrete, physical spatiotemporal manifestation (event). It is suitable for expressing adverbs like "probably", "arguably", "frequently", but not adverbs about specific individual events such as "beautifully" or “suddenly”, for which the Eventive Case would be appropriate.  
+
+```
+┌───────────────
+│ ◆ Uršı̋ łaƛaokwáı.
+│ ❖ ASR.REC-rain PRP-NTR-repeatedly-true
+│ ➥ (I remember that) it rained repeatedly.
+└─
+```
+
 • The Situative Case marks nouns referring to a world or a volume of spacetime within which the proposition expressed by the verb is true. For it to apply, the event and the target spacetime area must be entirely encompassed by the referent of the marked noun.  
 
 

grammar/src/morphology/roles/other-case-like-roles.md

@@ -10,7 +10,6 @@ These Role prefixes (Slot 2a) behave much like noun cases, although the syntacti
 │ Plural union        │  n  │  
 │ Sequential          │  ŋ  │  
 │ Attributive         │  l  │  
-│ Propositional       │  ł  │  
 └─────────────────────┴─────┘  
 ```  
 
@@ -67,7 +66,6 @@ These Role prefixes (Slot 2a) behave much like noun cases, although the syntacti
   └─  
 ```  
 
-• The Propositional Case turns the contentive word into a restrictive subordinating clausal adverb, i.e. an adverb that modifies the whole proposition represented by the current clause, and not describing the physical spatiotemporal manifestation (event) of that proposition: it would be suitable for expressing the adverbs "probably", "arguably", "frequently", but not event-specific adverbs such as "beautifully", for which the Eventive Case would be appropriate.  
 
 ## Discourse-level Roles