A testimonial can be hollow.Logical formLearned from1 sentences. Human beings may feel hollow at a core.Logical formLearned from1 sentences. A way may feel hollow.Logical formLearned from1 sentences. A showboating can be hollow.Logical formLearned from1 sentences. A front man can be hollow.Logical formLearned from1 sentences. A burning can be hollow of an eye.Logical formLearned from1 sentences. A golden ball can be hollow.Logical formLearned from1 sentences. A secret may pertain-to a hollow tree.Logical formLearned from1 sentences. Life may be rendered hollow.Logical formLearned from1 sentences. A (mirthless laugh) can be hollow.Logical formLearned from1 sentences. A role may pertain-to a hollow tree.Logical formLearned from1 sentences. A skeleton may be found in a hollow tree.Logical formLearned from1 sentences. A stilton can be hollow.Logical formLearned from1 sentences. A crateriform can be hollow.Logical formLearned from1 sentences. Dormitories may consist of hollow trees.Logical formLearned from1 sentences.