user: Question: What Semimajor axis (AU) has a Companion (in order from star) of g?
Columns: ['Companion (in order from star)', 'Mass', 'Semimajor axis ( AU )', 'Orbital period ( s day )', 'Eccentricity', 'Inclination']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['b', '≥ 4.0 +0.8 −0.7 M⊕', '0.0468 +0.0023 −0.0024', '4.3123 +0.0011 −0.0012', '0.20 +0.16 −0.14', '—']
SQL:

assistant: SELECT "Semimajor axis ( AU )" FROM "Table" WHERE "Companion (in order from star)" = 'g';