The MIRA ontology is designed to capture hypotheses and findings in social demography research. Specifically, the ontology links datasets to research questions in the domain of social demography. mechanisms of inequality research and analysis (MIRA) ontology has attribute is located in is represented by represents exists at has evidence is evidence for has context has mediator has moderator has object has qualifier has relation has subject has value component property dimension property measure property academic article organization information content entity geographic region observational study human population temporal entity comparatory question explanatory question interaction effect main effect mediator variable moderator moderator variable object subject qualifier the class of properties holding scientific relationships between variables, e.g., mira:hasCausalEffectOn relational property