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: Is mYC a metastasis gene for non-small-cell lung cancer?
Answer: Potential markers for detection of metastasis were identified and validated for diagnosis of human biopsies. These markers may represent targets for future therapeutic intervention as they include genes such as Gata4 that are exclusively expressed during lung development.

Ex Output:
yes


Ex Input:
Question: Does iCAM-1 deficiency suppress host allosensitization and rejection of MHC-disparate corneal transplants?
Answer: Prolonged survival seen in MHC-mismatched grafts in ICAM-1-/- mice, along with a suppressed DTH response to donor alloantigens after transplantation, suggest that ICAM-1 is associated with recipient sensitization to MHC alloantigens.

Ex Output:
yes


Ex Input:
Question: Do numbers of neurons in the retinal ganglion cell layer of the rat change throughout life?
Answer: When rats are kept under standard conditions, there is no neuronal loss in the retina during aging, although the cell density does decrease as a result of retinal expansion. It is not sufficient to measure retinal cell density to determine cell loss. In addition, it is important to know that in normal conditions there is no cell loss in the retinal ganglion cell layer as a result of aging. Any loss that is seen must be a result of additional factors.

Ex Output:

no