Here is the quote, clipped from the mathematica (not wolfram alpha) legal agreement:
WRI, and its agents, representatives, and independent contractors, shall not be obligated to provide or liable, under any circumstances, for providing information on or corrections to errors and/or omissions discovered at any time in the Product, whether or not they were aware of the errors and/or omissions. WRI does not recommend the use of the Product for applications in which errors and/or omissions could threaten life, injury, or significant loss. Some states do not allow the exclusion of implied warranties, so this may not apply to You. This warranty gives You specific legal rights, and You may also have other rights that vary from state to state. This Agreement is governed by the laws of the State of Illinois in the United States of America without effect to any choice of law provisions.
.......... see the middle of line 5.
I believe the parser corresponds to the language of version 3. However, many of the peculiarities of the language are present in version 1.
My comments stand on their own, and I think anyone reading them can make his or her own conclusions about their validity.