Table: how_its_made_episodes_3
Columns: series_ep
episode
netflix
segment_a
segment_b
segment_c
segment_d

Question: Segment A of heather gems is what netflix episode?
SQL: SELECT "netflix" FROM how_its_made_episodes_3 WHERE "segment_a" = 'heather gems'

Question: Segment B of aerospace fuel lines is what netflix episode?
SQL: SELECT "netflix" FROM how_its_made_episodes_3 WHERE "segment_b" = 'aerospace fuel lines'

Question: Segment B of aerospace fuel lines has what segment A?
SQL: SELECT "segment_a" FROM how_its_made_episodes_3 WHERE "segment_b" = 'aerospace fuel lines'

Question: Episode smaller than 210 had what segment c?
SQL: SELECT "segment_c" FROM how_its_made_episodes_3 WHERE "episode" < 210