diff --git a/rendercv/data/content.py b/rendercv/data/content.py
index 28fdfc0..cb851c1 100644
--- a/rendercv/data/content.py
+++ b/rendercv/data/content.py
@@ -1,4 +1,4 @@
-from pydantic import BaseModel, HttpUrl
+from pydantic import BaseModel, HttpUrl, model_validator
 from pydantic_extra_types.phone_numbers import PhoneNumber
 from typing import Literal
 from datetime import date as Date
@@ -19,18 +19,6 @@ class Skill(BaseModel):
     details: str = None
 
 
-class Activity(BaseModel):
-    # 1) Mandotory user inputs:
-    organization: str
-    position: str
-    location: Location
-    # 2) Optional user inputs:
-    start_date: Date = None
-    end_date: Date = None
-    company_url: HttpUrl = None
-    highlights: list[str] = None
-
-
 class TestScore(BaseModel):
     # 1) Mandotory user inputs:
     name: str
@@ -45,13 +33,13 @@ class Project(BaseModel):
     name: str
     location: Location
     # 2) Optional user inputs:
-    start_date: Date= None
+    start_date: Date = None
     end_date: Date = None
     url: HttpUrl = None
     highlights: list[str] = None
 
 
-class WorkExperience(BaseModel):
+class Experience(BaseModel):
     # 1) Mandotory user inputs:
     company: str
     position: str
@@ -78,10 +66,13 @@ class Education(BaseModel):
 
 class SocialNetwork(BaseModel):
     # 1) Mandotory user inputs:
-    network: Literal["LinkedIn", "GitHub", "Twitter", "Facebook", "Instagram"]
+    network: Literal["LinkedIn", "GitHub", "Instagram"]
     username: str
-    url: HttpUrl
 
+class Connection(BaseModel):
+    # 3) Derived fields (not user inputs):
+    name: Literal["LinkedIn", "GitHub", "Instagram", "phone", "email", "website"]
+    value: str
 
 class CurriculumVitae(BaseModel):
     # 1) Mandotory user inputs:
@@ -93,8 +84,31 @@ class CurriculumVitae(BaseModel):
     location: Location = None
     social_networks: list[SocialNetwork] = None
     education: list[Education] = None
-    work_experience: list[WorkExperience] = None
+    work_experience: list[Experience] = None
     academic_projects: list[Project] = None
-    extracurricular_activities: list[Activity] = None
+    extracurricular_activities: list[Experience] = None
     test_scores: list[TestScore] = None
     skills: list[Skill] = None
+
+    # 3) Derived fields (not user inputs):
+    connections: list[SocialNetwork] = []
+
+    @model_validator(mode="after")
+    @classmethod
+    def derive_connections(cls, model):
+        connections = []
+        if model.email is not None:
+            connections.append(Connection(name="email", value=model.email))
+        if model.phone is not None:
+            connections.append(Connection(name="phone", value=model.phone))
+        if model.website is not None:
+            connections.append(Connection(name="website", value=model.website))
+        if model.social_networks is not None:
+            for social_network in model.social_networks:
+                connections.append(Connection(
+                    name=social_network.network,
+                    value=social_network.username
+                ))
+        model.connections = connections
+        return model
+    
\ No newline at end of file