CREATE TABLE "pronunciation_of_checked_and_free_vowels" (
  "letter" text,
  "pronunciation_spelled_free" text,
  "pronunciation_spelled_checked" text,
  "example_spelled_free" text,
  "example_spelled_checked" text
);

Question: What is Pronunciation Spelled Free, when Pronunciation Spelled Checked is "ʏ"?
SQL: SELECT "pronunciation_spelled_free" FROM "pronunciation_of_checked_and_free_vowels" WHERE "pronunciation_spelled_checked"='ʏ';

Question: What is Letter, when Example Spelled Checked is "tin /tɪn/ ("tin")"?
SQL: SELECT "letter" FROM "pronunciation_of_checked_and_free_vowels" WHERE "example_spelled_checked"='tin /tɪn/ (\"tin\")';

Question: What is Pronunciation Spelled Free, when Pronunciation Spelled Checked is "ɛ"?
SQL: SELECT "pronunciation_spelled_free" FROM "pronunciation_of_checked_and_free_vowels" WHERE "pronunciation_spelled_checked"='ɛ';

Question: What is Pronunciation Spelled Checked, when Example Spelled Checked is "tin /tɪn/ ("tin")"
SQL: SELECT "pronunciation_spelled_checked" FROM "pronunciation_of_checked_and_free_vowels" WHERE "example_spelled_checked"='tin /tɪn/ (\"tin\")';

Question: What is Example Spelled Free, when Example Spelled Checked is "op /ɔp/ ("on")"?
SQL: SELECT "example_spelled_free" FROM "pronunciation_of_checked_and_free_vowels" WHERE "example_spelled_checked"='op /ɔp/ (\"on\")';

Question: What is Pronunciation Spelled Free, when Pronunciation Spelled Checked is "ɑ"?
SQL: SELECT "pronunciation_spelled_free" FROM "pronunciation_of_checked_and_free_vowels" WHERE "pronunciation_spelled_checked"='ɑ';