var queryModel = new QueryModel( new MainSourceExpression(typeof(Customer)), new WhereClause( new BinaryExpression( BinaryExpressionType.Equal, new MemberExpression(new MainReferenceExpression(), typeof(Customer).GetProperty("LastName")), new ConstantExpression("Smith")))); var query = new QueryParser().GetParsedQuery(queryModel); var result = query.ExecuteThis code first creates a QueryModel for the LINQ expression. It then uses a QueryParser to turn the model into a query that can be executed. Finally, it executes the query using an InMemoryQueryExecutor, returning all customers whose last name is "Smith". In conclusion, the Remotion.Linq QueryModel is a powerful package library that allows for the construction of complex LINQ expressions. Its ability to translate these expressions into query languages makes it a valuable tool for data management and analysis.(new InMemoryQueryExecutor());