improved BPIL3 and BPIL4

public/markdown/BPIL3.MD

@@ -1,33 +1,24 @@
-# Assignment 3: Call mister Postman
+# Assignment 3: Find Your Match
 
 ## Task
 
-[SPARQL queries](https://www.w3.org/TR/2013/REC-sparql11-protocol-20130321/) are sent via WEB using the HTTP protocol.
-In short, a client sends an HTTP request to a SPARQL endpoint that handle the request and sends HTTP response back to the originating client.
-In this way, you can send SELECT queries as well as UPDATE queries.
-The latter allows managing data in a remote triple store. You can use both GET and POST requests.
-Triple stores are able to response in mny formats and serialisations (e.g Turtle, RDF/XML, JSON and JSON-LD)
-
-In this assignment you are asked to perform an HTTP request with a SPARQL query using an HTTP client.
-You will use the last query (about product information) of the second assignment.
-After you succeed in an HTTP client, you will send the same request from your Mendix application.
+In this assignment you are asked to query company data generated in the BPIL assignment 1 : Explain Yourself. Your goal is to 
+find matching offerings and interests. The final query will be required for the last BPIL assignment.
 
 ### Required knowledge
 
  1. The student knows how to query Linked Data using SPARQL
- 2. The student knows the concept of federated querying
- 3. The student knows how to send an HTTP request from Mendix software
+ 2. The student has accomplished the BPIL Assignment 1 : Explain Yourself.
+ 3. The student has accomplished the BPIL Assignment 2 : Enrich It.
 
 ### Goals
 
- 1. To understand how SPARQL requests are constructed  
- 2. To sand a SPARQL query from within Mendix app
+ 1. To improve understanding of SPARQL requests  
+ 2. To gain practical experience in analysis of data semantics and structures.
 
 ### Assignment steps
 
-* **Install [Postman](https://www.getpostman.com/apps)** for your platform. Postman is a user friendly HTTP client that is handy when it comes to development of HTTP requests.
-* **Encode a query into a URL** using the URL-encoding [service](https://meyerweb.com/eric/tools/dencoder/). Use the last query from the previous assignment (about products).
-* **Construct an HTTP request** by adding your encoded query to the base `http://virtuoso.almere.pilod.nl/sparql?query=`
-* **Send the request** from Postman
-* **Change query parameters** to have response in a desired format by changing the accept header e.g (to `accept:json` for JSON encoding)
-* **Send the same request** from Mendix
+* **Find all the companies in the repository** Make a SPARQL query that lists all the companies.
+* **Find their offerings** Make a SPARQL query that retrieves company offerings.
+* **Find their interests** Make a SPARQL query that retrieves company interests.
+* **Construct a SPARQL query that matches offerings and interests** This query will be reused later in the last BPIL assignment.

public/markdown/BPIL4.MD

@@ -9,7 +9,7 @@ The latter allows managing data in a remote triple store. You can use both GET a
 Triple stores are able to response in mny formats and serialisations (e.g Turtle, RDF/XML, JSON and JSON-LD)
 
 In this assignment you are asked to perform an HTTP request with a SPARQL query using an HTTP client.
-You will use the last query (about product information) of the second assignment.
+You will use the last query (find a match) of the third assignment.
 After you succeed in an HTTP client, you will send the same request from your Mendix application.
 
 ### Required knowledge
@@ -26,7 +26,7 @@ After you succeed in an HTTP client, you will send the same request from your Me
 ### Assignment steps
 
 * **Install [Postman](https://www.getpostman.com/apps)** for your platform. Postman is a user friendly HTTP client that is handy when it comes to development of HTTP requests.
-* **Encode a query into a URL** using the URL-encoding [service](https://meyerweb.com/eric/tools/dencoder/). Use the last query from the previous assignment (about products).
+* **Encode a query into a URL** using the URL-encoding [service](https://meyerweb.com/eric/tools/dencoder/). Use the last query from the previous assignment (find a match).
 * **Construct an HTTP request** by adding your encoded query to the base `http://virtuoso.almere.pilod.nl/sparql?query=`
 * **Send the request** from Postman
 * **Change query parameters** to have response in a desired format by changing the accept header e.g (to `accept:json` for JSON encoding)