Anchor: 1915: German Submarine Fires Warning Torpedo Into Lusitania
Entailed: Warning Torpedo Fired By Germans in 1915.
Contradiction: Germans lack ability to launch torpedo. 
Contradiction: It is not necessary to take organisms from the same source and age when conducting a test.
Contradiction: Two people give each other a hug.
Contradiction: There are boys listening to the speaker.
Contradiction: Lady in the costume plays a saw.