The most important step is to obtain a high-quality parse-tree from a Deep Parser. Such a parse-tree should identify the clauses in the sentence as well as the Subject, Verb, and Arguments of each clause. For sentence #1, we should get the following clauses (and other details) from the parse-tree.
# | Clause | Subject | Object | Verb | Adjunct |
1 | The man was bitten by the dog in the park. | the man | was bitten (Passive) | by the dog in the park | |
2 | The man not to sue the city. | the man | the city | not to sue (Active Infinitive) | |
3 | The lawyer advised the man not to sue the city. | the lawyer | the man | advised (Active) | the man not to sue the city |