WA seems to have issues parsing the inches of water column pressure unit (abbreviated 'in WC' in results, as can be seen from a simple conversion query ). Trying to use this unit in calculations is a headache. For example take a simple question: 5 in WC * 1 ft^2. This is a simple query, pressure X area which should return an answer in units of force. But if you ask this question, the software cannot parse the question. Using parenthesis does not help. Is there a better way to use this unit? It seems like the space in the name of the unit is what is causing the issue, but I don't know of any other abbreviation to use.