Complex sentence: The closure of the Wertheim factory was somewhat of a family disagreement, as Herbert wanted to continue producing pianos while his mother did not, she had a casting vote on the board which decided to sell the property to Heinz to become the site for food preserving.
Split into simpler sentences: The closure of the Wertheim factory was somewhat of a family disagreement, as Herbert wanted to continue producing pianos while his mother did not. She had a casting vote on the board which decided to sell the property to Heinz to become the site for food preserving.