sentences:  On July 4, 2005, at approximately 11 AM, at 255 McKibbin Street, apartment number 222 (304 in the new numbering) exploded, causing major structural, smoke, and water damage to surrounding units.The explosion is thought to have been caused by the combustion of wood sealant vapor.Apartment 222 had recently been vacated, and was being refurbished by the building's management; the wood floor had been coated with sealant, and left unattended to saturate.