Want to convert multiple lines of data in single cell to multiple cells with single lines

I converted a PDF to Excel 2013 using a freebie online service. (Yes, I could pay and then this problem I have would likely go away. ;-)

I now have multiple lines of data (separated with an ALT+Return, I assume?) in a single cell. These lines should each be in their own cells. How to I extract this data? Example:

Existing:
Cell A1:
Line 1
Line 2
Line 3
Line 4

Desired:
Cell A1: Line 1
Cell A2: Line 2
Cell A3: Line 3
Cell A4: Line 4

Thanks,

copperberry