(Gum disease treatment) may require surgery.Logical formLearned from11 sentences. A person may buy a gum.Logical formLearned from11 sentences. A gum can be in a mouth.Logical formLearned from11 sentences. A person can be a (gum chewer).Logical formLearned from11 sentences. Gums may bleed.Logical formLearned from11 sentences. Flavors can be constituted-of-or-filled-with gum.Logical formLearned from11 sentences. A person may hate a gum.Logical formLearned from11 sentences. A female may snap a gum.Logical formLearned from11 sentences. A gum may chew.Logical formLearned from11 sentences. Gums may pertain-to a baby.Logical formLearned from11 sentences. A person may see gums.Logical formLearned from11 sentences. A (chewing gum) may pertain-to a female.Logical formLearned from10 sentences. A ball can be constituted-of-or-filled-with gum.Logical formLearned from10 sentences. A (blue gum) may pertain-to a world-city.Logical formLearned from10 sentences. (Gum trees) can be blue.Logical formLearned from10 sentences.