analyze input grammar use 递归的括号结构描述句子成分 每个成分表达为 Typeoffset+lengthif 1inputThing is though there’s some subtlety to this topic and some potential for paradoxes if you’re not careful so the secondary g

((S:0 PV:1 SC:3 O:5+18( S:5 PV:6 SC:)) Conj:24 (S:25+3 PV:28 O:29+15(S:30 PV:31 O:32+2 (PP:34+19 S:36 PV:37 O:38))))

Explanation:

• S: Sentence
  • PV: Predicate Verb
  • SC: Subject Complement
  • O: Object
  • Conj: Conjunction
  • PP: Prepositional Phrase
• The sentence starts with an S component at offset 0, with a PV component at offset 1, SC component at offset 3, and an O component at offset 5 with a length of 18. This O component contains another S component at offset 5, with a PV component at offset 6 and an SC component.
• The conjunction "though" is represented by a Conj component at offset 24.
• The second S component starts at offset 25 with a PV component at offset 28, an O component at offset 29 with a length of 15, and a PP component at offset 34 with a length of 19. The O component contains another S component at offset 30 with a PV component at offset 31, an O component at offset 32 with a length of 2, and an M component at offset 34. The M component is represented as a nested PP component with an S component inside.