Lettuce can be on a black market.Logical formLearned from3 sentences. A process may be used on bags of lettuce.Logical formLearned from3 sentences. Iceberg may account for some percent of a lettuce.Logical formLearned from3 sentences. (Eating lettuce) may expose consumers to a dose of (rocket fuel).Logical formLearned from3 sentences. (Perchlorate levels) can be in lettuce.Logical formLearned from3 sentences. A perchlorate may be consumed by eating lettuce.Logical formLearned from3 sentences. Perchlorate may be found in lettuce.Logical formLearned from3 sentences. A desk may be stacked with bags of lettuce.Logical formLearned from3 sentences. Someone may eat lettuce.Logical formLearned from3 sentences. Lettuce can be shallow-rooted.Logical formLearned from3 sentences. A lettuce can be untreated.Logical formLearned from3 sentences. Lettuce can be in a us-state.Logical formLearned from3 sentences. Lettuce can be for salad.Logical formLearned from3 sentences. Use can be in lettuce.Logical formLearned from3 sentences. Vegetables can be as lettuce.Logical formLearned from3 sentences.