{"kind":"assistant","text":"IV2SLS.from_formula('outcome ~ 1 + controls + C(region) + C(lowed) + C(year) + [D ~ Total_log]').fit(cov_type='clustered', clusters=state)","tool_calls":[{"args":{"cluster":"state","dataset":"ref_iv","endog":["D"],"exog":["percent_black","percent_white","percent_male","unemploymentrate","density","HHINC_log","region_2: Midwest","region_3: South","region_4: West","lowed_1: Low-education type","year_2008.0"],"instruments":["Total_log"],"y":"outcome"},"id":"script_1","name":"infer__iv_2sls"}]}