diff --git a/.github/workflows/validate_rdf.yml b/.github/workflows/validate_rdf.yml
new file mode 100644
index 0000000..8c58f81
--- /dev/null
+++ b/.github/workflows/validate_rdf.yml
@@ -0,0 +1,48 @@
+name: Validate vivo.owl
+
+on:
+  pull_request:
+    paths:
+      - 'vivo.owl'  # Trigger only when vivo.owl is changed
+  workflow_dispatch: # Allow manual triggering
+
+<<<<<<< HEAD
+permissions:
+  contents: read
+  pull-requests: write  # Allow writing comments to pull requests
+
+=======
+>>>>>>> parent of 3711550 (Update validate_rdf.yml)
+jobs:
+  validate-rdf:
+    runs-on: ubuntu-latest
+
+    steps:
+      # Checkout the repository
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      # Download Apache Jena
+      - name: Download Apache Jena
+        run: |
+          wget https://dlcdn.apache.org/jena/binaries/apache-jena-5.2.0.tar.gz -O apache-jena.tar.gz
+          tar -xzf apache-jena.tar.gz
+
+      # Validate vivo.owl
+      - name: Validate RDF
+        run: |
+          $GITHUB_WORKSPACE/apache-jena-5.2.0/bin/riot --validate vivo.owl > $GITHUB_WORKSPACE/validation_report.txt || true
+          if [ ! -s $GITHUB_WORKSPACE/validation_report.txt ]; then
+            echo "No validation errors found." > $GITHUB_WORKSPACE/validation_report.txt
+          fi
+          cat $GITHUB_WORKSPACE/validation_report.txt
+
+      # Post validation report to PR
+      - name: Post validation report to PR
+        if: github.event_name == 'pull_request'
+        uses: marocchino/sticky-pull-request-comment@v2
+        with:
+          header: Validation Report for vivo.owl
+          path: ${{ github.workspace }}/validation_report.txt
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}  # Ensure the token is passed as an environment variable