user: Question: What metric value has a jyutping of lei4?
Columns: ['Jyutping', 'Character', 'Portuguese', 'Relative value', 'Metric value', 'Imperial value']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['lei4', '厘', 'Liz', '1/1600', '37.79931mg', '~0.2133 dr']
SQL:

assistant: SELECT "Metric value" FROM "Table" WHERE "Jyutping" = 'lei4';