premise: Ballads of Sacco & Vanzetti is a set of ballad songs, written and performed by Woody Guthrie, related to the trial, conviction and execution of Sacco and Vanzetti. The series was commissioned by Moe Asch in 1945 and recorded in 1946 and 1947. Guthrie never completed the project and was unsatisfied by the result. The project was released later in its abandoned form by Asch.
hypothesis: Sacco and Vanzetti are dead.
reason: The songs were written about the trial, conviction and execution of Sacco and Vanzetti, which means they are dead. It may have been difficult for the system if it didn't know what "execution" meant as it applied here.