A person may witness a mid-air collision.Logical formLearned from6 sentences. A mid-air collision can be between a (f-16 jet).Logical formLearned from6 sentences. Collisions can be at (railroad crossings).Logical formLearned from6 sentences. Some collisions of continental plates may push_up (ocean floors).Logical formLearned from6 sentences. A risk of a collision may rise as a square of an increase.Logical formLearned from6 sentences. A collision may launch some (newspaper columns).Logical formLearned from6 sentences. A collision can be between boomers.Logical formLearned from6 sentences. A (collision course) can be over a country.Logical formLearned from6 sentences. A replay may pertain-to a collision.Logical formLearned from6 sentences. Some persons may die in collisions.Logical formLearned from6 sentences. Electronic instruments may undergo a collision.Logical formLearned from6 sentences. A collision can be at a US-city.Logical formLearned from6 sentences. Collisions can be during an airlift.Logical formLearned from6 sentences. A penalty may come from a collision of taxation.Logical formLearned from6 sentences. A living fossil may survive a collision.Logical formLearned from6 sentences.