Table: how_its_made_episodes_22
Columns: series_ep
episode
netflix
segment_a
segment_b
segment_c
segment_d

Question: What was the segment b for Netflix s01e21?
SQL: SELECT "segment_b" FROM how_its_made_episodes_22 WHERE "netflix" = 's01e21'

Question: What segment d is associated with an episode number above 16 and a segment c of laser eye surgery?
SQL: SELECT "segment_d" FROM how_its_made_episodes_22 WHERE "episode" > 16 AND "segment_c" = 'laser eye surgery'