Particles may be produced in collisions.Logical formLearned from8 sentences. Asteroids may undergo collisions.Logical formLearned from8 sentences. High-energy particles may undergo collisions.Logical formLearned from8 sentences. Regulations can be for preventing collisions.Logical formLearned from8 sentences. Collisions can be with buildings.Logical formLearned from8 sentences. An anniversary may pertain-to a collision.Logical formLearned from8 sentences. A (fishing boat captain) may be involved in a collision.Logical formLearned from8 sentences. Some collisions may occur within some minutes.Logical formLearned from8 sentences. An (emergency channel) can be around a time of a collision.Logical formLearned from8 sentences. A collision can be with a coast.Logical formLearned from8 sentences. A train may cause a collision.Logical formLearned from8 sentences. A collision can be over a river.Logical formLearned from8 sentences. A male may sustain in a collision.Logical formLearned from8 sentences. Collisions can be on roads.Logical formLearned from8 sentences. Collisions of protons may imperil the earth.Logical formLearned from8 sentences.