CREATE TABLE table_name_73 (semimajor_axis___au__ VARCHAR, mass VARCHAR)

What Semimajor axis (AU) has a Mass of 3.5 1.4 m ?
SELECT semimajor_axis___au__ FROM table_name_73 WHERE mass = "≥ 3.5 ± 1.4 m⊕"
SELECT "semimajor_axis___au__" FROM "table_name_73" WHERE "mass" = "≥ 3.5 ± 1.4 m⊕"