user: Question: what is the normal environment of occurrence that has a Proto-Germanic origin /ai/
Columns: ['Gothic letter or digraph', 'Roman equivalent', '"Normalised" transliteration', 'Sound', 'Normal environment of occurrence (in native words)', 'Proto-Germanic origin']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['��', 'a', 'a', '/a/', 'Everywhere', '/a/']
SQL:

assistant: SELECT "Normal environment of occurrence (in native words)" FROM "Table" WHERE "Proto-Germanic origin" = '/ai/';