(Life spans) may pertain-to airplanes.Logical formLearned from10 sentences. An (attention span) may pertain-to a US-president.Logical formLearned from10 sentences. A godsend can be in an era of an (attention span).Logical formLearned from10 sentences. A span may be midwayed through a quarter.Logical formLearned from10 sentences. (Attention spans) may pertain-to viewers.Logical formLearned from10 sentences. (Attention spans) can be minuscule.Logical formLearned from10 sentences. Some fouls can be in a span.Logical formLearned from10 sentences. A male may have a (life span).Logical formLearned from10 sentences. A limit may pertain-to an (attention span).Logical formLearned from10 sentences. Differences can be in (life span).Logical formLearned from10 sentences. A span can be in a US-city.Logical formLearned from10 sentences. A span can be constituted-of-or-filled-with issues.Logical formLearned from10 sentences. (Span programs) can be monotone.Logical formLearned from10 sentences. Coverage may pertain-to (database spans).Logical formLearned from10 sentences. A (life span) can be operational.Logical formLearned from10 sentences.