Premise: The new nationalism led Piedmont into the Italian orbit at the head of the Risorgimento unification movement, and the House of Savoy served as Italy's reigning royal family from 1861 to 1946, with Turin serving ever so briefly as the capital of the newly unified Italy in 1861.

Hypothesis: Italy's royal family was the House of Savoy for 85 years.
Relation: entailment