引けばドアが開きます。

to pull; to draw (attention, etc.); to attract (interest, etc.); to draw back; to draw (a card); to draw (plan, line, etc.); to catch (cold); to play (string instr.); to look up (e.g. dictionary); to consult; to haul; to pull (vehicles); to subtract; to ebb; to fade; to descend (from); to inherit (a characteristic); to quote; to raise (as evidence); to lay (a cable); to draw (a cable)

door (Western-style)

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

to open; to undo; to unseal; to unpack; to bloom; to unfold; to spread out; to open (for business, e.g. in the morning); to be wide (gap, etc.); to widen; to hold (meeting, etc.); to give; to open; to found (nation, dynasty, sect, etc.); to open (a new business); to set up; to establish; to start; to open (ports, borders, etc.); to open (an account); to open up (new land, path, etc.); to clear; to develop; to open (a file, etc.); to extract (root); to reduce (equation); to cut open (fish); to change (kanji into hiragana); to flare (e.g. skirt); to slacken (into a poor posture)