in sexual original the hatched is a 4 for the disposal from the dad to the grandfather
coupling is sexual_activity. sexual_reproduction is biological_reproduction. sexual_reproduction is not reproduction. sexual_reproduction is reproduction. adult is sexually_mature_thing. child_molestation is child_sexual_abuse. fertile_animal is sexually_mature_thing. assortative_mating is not coupling. assortative_mating is coupling. sexing_when_two_people has sex