[观察例句]
1．Eric set sail once again，this time with 25 ships，of which only 14 made it to Greenland.
2．Eric reached Greenland and discovered that people could live in the place where he landed.
3．Biarni was the man with whom Leif discussed his plans.
4．By around 900AD，there were many places in Northern Europe where the Vikings chose to live.
