a beneficial relationship is when two organisms help each other survive
befriending_organism is social_event. subservience is helping. befriending_organism is not social_event. humans has ability_to_make_things_better generosity is sharing. befriending_organism is not expressing_friendship. befriending_organism is expressing_friendship. kindness is good. killing_by_organism_unique is killing. plants_and_humans has symbiotic_relationship