Three Dimensional Geometry

If the lines given by \(\frac{x-1}{2 \lambda}=\frac{y-1}{-5}=\frac{z-1}{2}\) and \(\frac{x+2}{\lambda}=\frac{y+3}{\lambda}=\frac{z+5}{1}\) are parallel, then the value of \(\lambda\) is