Extract the logical structure of the argument into JSON with keys: premises (array of strings), conclusion (string), argument_type ("deductive" or "inductive"), form (array of 1-3 strings, each one of: modus ponens, modus tollens, hypothetical syllogism, disjunctive syllogism, categorical syllogism, reductio ad absurdum, generalization, application of generalization, inference to the best explanation, analogy, causal, authority, affirming the consequent, denying the antecedent, ad hominem, hasty generalization, false dilemma, ad populum, begging the question, straw man, equivocation, other), and suppressed_premise (string or null). List one form for a single-step argument. List every form a multi-step argument performs, most central first. Use ["other"] alone, and only when no other form applies. Return only the JSON object.