Singapore FTA: crops grown in Singapore or the U.S. from foreign seed

According to the United States-Singapore Free Trade Agreement (SFTA), what are the rules of origin for agricultural goods exported from Singapore to the United States, which are grown in the Singapore or the United States (i.e. an SFTA country), started from seeds imported from a country other than Singapore or the United States (i.e. a non-SFTA country)? The agricultural goods are not subject to the specified exclusion.