Practical Grammar 7 - old

Prepositional Phrases: explaing the complex annotation

1. VP → V PP
2. {
3. ↑=↓1;
4. (↑ (↓2 PCASE)) = ↓2;
5. }

(↑ SUBJ) =↓1;

1. S -> NP VP
2. {
3.  (↑ SUBJ) =↓1;
4.  ↑=↓2;
5. }