original: he rowed across in a boat and discovered the japanese submarine .
simplifications: he rowed across in a boat and discovered the japanese submarine . he discovered the japanese submarine after he rowed across in a boat . he rowed across in a boat and discovered the japanese submarine . he rowed across in a boat and found the japanese submarine . he discovered the japanese submarine , while rowing in a boat . he rowed across in a boat and saw the japanese submarine . he rowed across in a boat and found the japanese submarine . he rowed across in a boat and found the japanese submarine .