Clouds may obscure the sky.Logical formLearned from9 sentences. Clouds may obscure a crater.Logical formLearned from9 sentences. Figures may obscure a (dropout epidemic).Logical formLearned from9 sentences. A controversy may obscure a fact.Logical formLearned from9 sentences. A hitting may obscure some trait.Logical formLearned from9 sentences. Foibles may obscure a fact.Logical formLearned from9 sentences. Clouds may obscure views of a volcano.Logical formLearned from9 sentences. A person may obscure a problem.Logical formLearned from9 sentences. Faces may be obscured by beards.Logical formLearned from9 sentences. Smoke may obscure some concerns.Logical formLearned from9 sentences. Views of a volcano may obscure by clouds.Logical formLearned from8 sentences. Clouds may obscure the moon.Logical formLearned from8 sentences. A truth may obscure by accounts of a crisis.Logical formLearned from8 sentences. Hair may obscure a face.Logical formLearned from8 sentences. Tears may obscure a vision.Logical formLearned from8 sentences.