Derivation Tree:
SO: book, Input: [n!case,[the,d]]
1 esm SO: {book,n!case}, Input: [[the,d]]
2 epm SO: <book,n!case>, Input: [[the,d]]
3 epm SO: <n!case,book>, Input: [[the,d]]
Nodes: 4
Dead: 0 MergeR: 0 Unlabeled: 0 Itf: 0 Found: 0 Queue: 3