Write the next sentence in this paragraph:

How to use the facebook graph search
Log into facebook using a pc.
Sign in to your facebook account using either your username or your registered email address and password.
Activate graph search.

OPT: (a). Click the " activate graph " button in the upper right-hand corner of the page. The gear button should be found right under the " get started " button.; (b). For this method, you'll need your facebook password and even a verification code. If your password cannot be changed, you'll need to receive a login email from the facebook website.; (c). If you have never used graph search before, activate this feature using this link: www.facebook.com/about/graphsearch. Once the page opens up, click on the " try graph search " link.; (d). Type in the email address and password associated with your account and click " activate graph search " or " activate graph search " to access the details. Upon logging in, a list of any social networks connected to your account will appear on the left side of the page.;
(c).