```xml <result> <column_name>input_tokens</column_name> <family>additive</family> <subtype>real_additive</subtype> <confidence>0.95</confidence> <requires_user_confirmation>false</requires_user_confirmation> <sum_meaningful>true</sum_meaningful> <signed>false</signed> <reducers> <primary_reducer>sum</primary_reducer> <valid_reducers>sum, min, max, mean, median, count, distribution</valid_reducers> <excluded_reducers>product (not a ratio), geomean (not a ratio)</excluded_reducers> <average_semantics>arithmetic_mean</average_semantics> </reducers> <inner_outer_measure> <inner_measure_reducer>sum</inner_measure_reducer> <outer_measure_reducer>sum</outer_measure_reducer> </inner_outer_measure> <multiplicative_partner_derivable>true</multiplicative_partner_derivable> <reasoning> The table is PATH with a sequence axis, so multiplicative is plausible, but the column name "input_tokens" is a clear count/quantity signal (real_additive). The data strongly confirms: mean 3994, median 3580, max 846909 - large unbounded magnitude centered far from 1.0, with 22.7% zeros. Contains zeros rules out multiplicative. This is a classic extensive quantity (token count) that accumulates when volumes merge. Sum is the natural rollup operation. </reasoning> <table_type_conflict>false</table_type_conflict> </result> ```