Problem:
Add the two matrices
$\left(
\begin{array}{c}
 -5 \\
 -1 \\
 -1 \\
\end{array}
\right)$ and
$\left(
\begin{array}{c}
 8 \\
 7 \\
 8 \\
\end{array}
\right)$
Answer:
$\left(
\begin{array}{c}
 3 \\
 6 \\
 7 \\
\end{array}
\right)$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/add/3664.txt'}