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 Q]: Question: Does the ets-domain transcription factor Spdef promote maturation of goblet and paneth cells in the intestinal epithelium?
Answer: Spdef acts downstream of Math1 to promote terminal differentiation of a secretory progenitor pool into Paneth and goblet cells.
[EX A]: yes

[EX Q]: Question: Does transcriptome analysis in oak uncover a strong impact of endogenous rhythmic growth on the interaction with plant-parasitic nematodes?
Answer: The results highlight that gene response patterns of plants to biotic interactions, both negative (i.e. plant-parasitic nematodes) and beneficial (i.e. mycorrhiza), are largely modulated by endogenous rhythmic growth, and that such plant traits should be considered as an important driver of these relationships in future studies.
[EX A]: yes

[EX Q]: Question: Is the diagnostic value of provocative clinical tests in ulnar neuropathy at the elbow marginal?
Answer: The diagnostic value of provocative clinical tests in UNE is poor.
[EX A]:
yes