Q: In chemistry, an amphoteric compound is a molecule or ion that can react both as an acid as well as a base. Many metals (such as copper, zinc, tin, lead, aluminium, and beryllium) form amphoteric oxides or hydroxides. Amphoterism depends on the oxidation states of the oxide. AlO is an example of an amphoteric oxide.
Can we conclude that can a compound be both an acid and a base?
OPTIONS:
- no
- yes
A: yes

Q: In 1934, the ball was made more pointed at the ends. The creation of the pointed football is generally credited to Shorty Ray, at the time a college football official and later the NFL's head of officiating. This made passing the ball easier, as was its intent, but made the drop kick obsolete, as the more pointed ball did not bounce up from the ground reliably. The drop kick was supplanted by the place kick, which cannot be attempted out of a formation generally used as a running or passing set. The drop kick remains in the rules, but is seldom seen, and rarely effective when attempted. In Canadian football the drop kick can be taken from any point on the field, unlike placekicks which must be attempted behind the line of scrimmage.
Can we conclude that can you drop kick a field goal in nfl?
OPTIONS:
- no
- yes
A: yes

Q: Riverdale is an American teen drama television series based on the characters of Archie Comics. The series was adapted for The CW by Archie Comics' chief creative officer Roberto Aguirre-Sacasa, and is produced by Warner Bros. Television and CBS Television Studios, in association with Berlanti Productions and Archie Comics. Originally conceived as a feature film adaptation for Warner Bros. Pictures, the idea was re-imagined as a television series for Fox. In 2015, development on the project moved to The CW, where the series was ordered for a pilot. Filming takes place in Vancouver, British Columbia.
Can we conclude that is the show riverdale based off of archie comics?
OPTIONS:
- no
- yes
A: yes

Q: The storyline was softly rebooted with a main narrative led by an adult Henry Mills, set several years after last season's events. In February 2018, it was announced the seventh season would serve as the final season of the series; the season and series concluded on May 18, 2018.
Can we conclude that is season 7 of once upon a time the final season?
OPTIONS:
- no
- yes
A:
yes