(Life spans) can be extended.Logical formLearned from6 sentences. A span can be dark.Logical formLearned from6 sentences. A span may pertain-to the earth.Logical formLearned from6 sentences. A span may pertain-to hands.Logical formLearned from6 sentences. A baby can be in a span of hours.Logical formLearned from6 sentences. (Summer program-chem & enviro tox span honor society) may peer (immersion program).Logical formLearned from6 sentences. A person may determine spans.Logical formLearned from6 sentences. An (attention span) can be nonexistent.Logical formLearned from6 sentences. An (attention span) can be oriented.Logical formLearned from6 sentences. A span can be years.Logical formLearned from6 sentences. (Attention spans) may dwindle.Logical formLearned from6 sentences. (Time span) may be spent for using a (power wheelchair).Logical formLearned from6 sentences. A (life span) may pertain-to furniture.Logical formLearned from6 sentences. An increase can be over a span of some years.Logical formLearned from6 sentences. A span may pertain-to a firefly.Logical formLearned from6 sentences.