Her face is a beautiful oval shape.

His movement is limited because he damaged his cervical vertebra.

We went to Tokyo via the route.

We went to Osaka via Tokyo.

The guard is standing at the entrance of the bank.

The guard was waiting for us at the entrance of the building.

This planet is completely spherical.

This problem can be solved using the basic concepts of linear algebra.

This problem requires solving a nonlinear equation.

It is difficult to solve this nonlinear equation.