You will be given a definition of a task first, then some input of the task.
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.

Question: Do detailed characterization of tumor infiltrating lymphocytes in two distinct human solid malignancies show phenotypic similarities?
Answer: This study demonstrates that multi-color flow cytometry of freshly digested tumor samples reveals phenotypic differences in TIL vs PBL T cell sub-populations. The TIL composition in primary and metastatic tumors from two distinct histologies were remarkably similar, showing a greater proportion of activated/suppressive Treg (HLA-DR(+), CD39(+), CTLA-4(+) and Helios(+)) and activated cytotoxic T cells (CD8(+)/HLA-DR(+)/CD38(+)) when compared to PBL and an increase in IL-6 mRNA from CD4 TIL.
Output:
yes