Detailed Instructions: 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.
Q: Question: Is immunization against a low-frequency human platelet alloantigen in fetal alloimmune thrombocytopenia a single event : characterization by the combined use of reference DNA and novel allele-specific cell lines expressing recombinant antigens?
Answer: This study demonstrates that cases of FNAIT attributed to low-frequency PLT alloantigens cannot be regarded as single events. The availability of reference DNA and cell lines expressing recombinant PLT alloantigens can facilitate their identification.
A:
no