question: eggs:incubator
choices.label: A B C D
choices.text: cell:organ embryo:nurture fertilized egg:uterus nutrient:soil
explanation: "eggs" are hatched in "incubators". "cells" are the components of "organs". the "embryo" can be "nurtured", and the uterus is the place where the "embryo" is "nurtured". the "fertilized egg" develops in the "uterus". "soil" contains necessary "nutrients" for plant growth, and "nutrients" are part of "soil".
relation: eggs incubator R3.10
relation: cell organ R2.3
relation: embryo nurture R4.2
relation: fertilized egg uterus R3.10
relation: nutrient soil R2.3