Given a passage with a question and an answer to that question, classify if the answer actually answers the question into 'yes' or 'no'. Output 'yes' if the answer answers the question and output 'no' if the answer does not answer the question.

Ex Input:
Question: Are wedding rings a significant source of bacterial contamination following surgical scrubbing?
Answer: This preliminary study would suggest that a traditional band wedding ring is not a source of a bacterial load following a standard surgical scrub procedure and, as such, there is no requirement for their removal pre-operatively.

Ex Output:
no


Ex Input:
Question: Does early primary repair of tetralogy of Fallot lead to increased postoperative resource utilization?
Answer: Extracardiac anomalies, prematurity, low birth weight, and nonelective surgical intervention are predictors of increased morbidity and increased hospital resource utilization and impose a significant cost burden to the care of these patients. Early primary repair of tetralogy of Fallot can be safely performed without any increase in morbidity or increased hospital resource utilization.

Ex Output:
no


Ex Input:
Question: Does n-Acetylcysteine Amide exert Possible Neuroprotective Effects in Newborn Pigs after Perinatal Asphyxia?
Answer: The reduced levels of the pivotal inflammatory markers IL-1β and TNFα and the transcription factor NF-x03BA;B may indicate that NACA has possible neuroprotective effects after perinatal asphyxia.

Ex Output:

yes