Given a part of privacy policy text, classify it into one of these categories: 
 (1) First Party Collection/Use (how and why a service provider collects user information), 
 (2) Third Party Sharing/Collection (how user information may be shared with or collected by third parties), 
 (3) User Choice/Control (choices and control options available to users), 
 (4) User Access, Edit, & Deletion (if and how users may access, edit, or delete their information), 
 (5) Data Retention (how long user information is stored), 
 (6) Data Security (how user information is protected), 
 (7) Policy Change (if and how users will be informed about changes to the privacy policy).

An unnamed third party does do something unspecified with your activities on the website or app for marketing purposes. The data is aggregated or anonymized.
Third Party Sharing/Collection
The sentence states that an unnamed third party does something unspecified with data collected from users of the website or app for marketing purposes. This is a statement about what third parties may do with user information, so it falls under the category 3) Third Party Sharing/Collection..