Assertion: monarch's journey | /r/HasProperty | long
Facets:
Source sentences:
text: In February or March, they wake up to start a long journey back to the north.
text: Every fall, monarchs in North America begin their long journey back to Mexico for the winter.
text: The journey is so long, it takes several generations to complete.
text: This fat supply gives energy to the monarchs on their long journey.