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The relevance criteria distribution over question types is shown below. 'Content value' was the most frequent category, followed by 'utility'. Questioners specifically preferred the answers related to the 'Existence of particular details', e.g., 'The answer told me what kind of barrel was for sell and who to contact'.

The relevance criteria distribution over subject categories is shown below. 'Socio-emotional value' category stands out in HE, SP, NE, FR and PP. Content value weights a lot in SS, TR. Utility was frequent in FD.