Read the excerpt from act i, scene i of romeo and juliet.

capulet: what noise is this? give me my long sword
lady capulet: a crutch, a crutch! why call you for a sword?
capulet: my sword, i say, old montague is come,
and flourishes his blade in spite of me.

what is the purpose of this dialogue?

to foreshadow the tragedy
to describe the setting
to provide comic relief
to build suspense