Problem: Text: In computational complexity theory, NP (nondeterministic polynomial time) is a complexity class used to describe certain types of decision problems. Informally, NP is the set of all decision problems for which the instances where the answer is ''yes'' have efficiently verifiable proofs. More precisely, these proofs have to be verifiable by deterministic computations that can be performed in polynomial time.

Question: can np problems be solved in polynomial time?

OPTIONS:
- no
- yes
A: yes

Problem: Text: This article lists in chronology and provides additional details of incidents in which a firearm was discharged at a school infrastructure or campus in the United States, including incidents of shootings on a school bus. This list contains school shooting incidents that occurred on the campuses of K-12 public schools and private schools as well as colleges and universities. It excludes incidents that occurred during wars or police actions as well as murder-suicides by rejected suitors or estranged spouses and suicides or suicide attempts involving only one person. Mass shootings by staff of schools that involve only other employees are covered at workplace killings. This list does not include bombings such as the Bath School disaster.

Question: has there been a school shooting at a private school?

OPTIONS:
- no
- yes
A: yes

Problem: Text: Along with karashi, English mustard is one of the hottest in the world. It is bright yellow in color with a thicker consistency than the mild American mustard. The most famous brand of English mustard is Colman's, which first produced their variety in 1814 as a powder in their yellow tin. William Taylor, based in Newport Pagnell, was the first person to sell English mustard in a prepared format in 1830.

Question: is yellow mustard the same as english mustard?

OPTIONS:
- no
- yes
A:
no