Assertion: marsupial's baby | /r/AtLocation | the placenta
Facets:
value: for a short period of time
type: TEMPORAL
value: for a very short time period
type: TEMPORAL
Source sentences:
text: The baby is attached to the placenta only for a short period of time.
text: Marsupials: The placenta of the marsupials is like a yolk sac and the baby is attached to the placenta for a short period of time.
text: The baby is attached to the placenta for a very short time period.