<u><em>Answer:</em></u>
Ella ............> Maria .............> Sarah ............> Marianne .............> Julia
<u><em>Explanation:</em></u>
<u>1- For the first given:</u>
Maria finished before Sarah, but behind Ella
<u>So, we can infer that:</u>
Ella finished first, followed by Maria and then Sarah
Ella ............> Maria .............> Sarah
<u>2- For the second given:</u>
Marianne finished before Julia, but behind Sarah
<u>So, we can infer that:</u>
Sarah finished first, followed by Marianne and then Julia
Sarah ............> Marianne .............> Julia
<u>3- Combining the above parts:</u>
<u>By combining what we got from parts 1 and 2, we can deduce that:</u>
Ella finished first, followed by Maria, Sarah, Marianne and finally Julia
Ella ............> Maria .............> Sarah ............> Marianne .............> Julia
Hope this helps :)