Assertion: male reproductive system's organ | /r/CapableOf | become functional
Facets:
value: fully
type: DEGREE
Source sentences:
text: When a baby boy is born, he has all the parts of his reproductive system in place, but it isn't until puberty that his reproductive organs mature and become fully functional.
text: Reproductive organs become fully functional only when the body has matured and experienced puberty, but the level of the hormones that result in these changes decreases as people become older.