Ochagavia is a genus of the botanical family Bromeliaceae, subfamily Bromelioideae. The genus is named for Sylvestris Ochagavia, Chilean minister of education. Endemic to southern and central Chile (including the Juan Fernández Islands), this genus is represented by four accepted species.
This genus is represented by five accepted species. 
A: No

The Treaty of Breslau was a preliminary peace agreement signed on 11 June 1742 following long negotiations at the Silesian capital Wrocław (German: "Breslau" ) by emissaries of Archduchess Maria Theresa of Austria and King Frederick II of Prussia ending the First Silesian War.
The Treaty of Breslau was a preliminary peace agreement signed on 11 June 1742 following brief negotiations.
A: No

PSR B1919+21 is a pulsar with a period of 1.3373 seconds and a pulse width of 0.04 seconds. Discovered by Jocelyn Bell Burnell and Antony Hewish on November 28, 1967, it is the first discovered radio pulsar. The power and regularity of the signals were briefly thought to resemble an extraterrestrial beacon, leading the source to be nicknamed LGM-1 (for "little green men").
PSR B1919+21 was discovered last year.
A:
No