sentences: a extinguish place is a protons where a radiation reacts with space oil
docs: alpha_radiation is corpuscular_radiation. electron_excitation is quantum_state_transition. radiation is energy. swath is space. corpuscular_radiation is radiation. radiation is spread. alpha_decay is nuclear_radiation_process. cosmic_radiation is radiation. reactive_ion_etch is dry_etch. excimer_laser is laser.