The first game in Arena Football League history was played on June 19, 1987, between the Gladiators and Commandos at Pittsburgh Civic Arena in front of 12,117 fans. The game was deliberately not televised so that it could be analyzed and any follies and failures would not be subject to national public scrutiny. Following the inaugural game, tweaks and adjustments were made, and the first season continued. The Dynamite and Bruisers played in the first-ever televised AFL game the next night, on June 20, 1987, at the Rosemont Horizon in suburban Chicago on ESPN with Bob Rathbun and Lee Corso calling the play. The broadcast showed a short clip of the Commandos-Gladiators game. Each team played six games, two against each other team. The top two teams, Denver and Pittsburgh, then competed in the first-ever AFL championship game, ArenaBowl I.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): On what date was the inaugural game of the AFL played?
Ah, so.. June 19, 1987

Asphalt/bitumen is typically stored and transported at temperatures around 150 C (302 F). Sometimes diesel oil or kerosene are mixed in before shipping to retain liquidity; upon delivery, these lighter materials are separated out of the mixture. This mixture is often called "bitumen feedstock", or BFS. Some dump trucks route the hot engine exhaust through pipes in the dump body to keep the material warm. The backs of tippers carrying asphalt/bitumen, as well as some handling equipment, are also commonly sprayed with a releasing agent before filling to aid release. Diesel oil is no longer used as a release agent due to environmental concerns.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What truck feature is occasionally used to keep asphalt warm?
Ah, so.. engine exhaust

The upgrade addressed a number of criticisms faced by Windows 8 upon its release, with additional customization options for the Start screen, the restoration of a visible Start button on the desktop, the ability to snap up to four apps on a single display, and the ability to boot to the desktop instead of the Start screen. Windows 8's stock apps were also updated, a new Bing-based unified search system was added, SkyDrive was given deeper integration with the operating system, and a number of new stock apps, along with a tutorial, were added. Windows 8.1 also added support for 3D printing, Miracast media streaming, NFC printing, and Wi-Fi Direct.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What search engine was added in Windows 8.1?
Ah, so..
Bing-based unified search system