Input (grade 13): The other remains, with unrelated DNA, correspond to the family's doctor (Yevgeny Botkin), their valet (Alexei Trupp), their cook (Ivan Kharitonov) and Alexandra's maid (Anna Demidova).
Output (grade 7): The other remains had different DNA. They were the bodies of the family's doctor (Yevgeny Botkin), valet (Alexei Trupp), cook (Ivan Kharitonov) and Alexandra's maid (Anna Demidova).