Only 29 families of frogs are known and most were identified and described in the mid-1800s and the last in 1926.
Only 29 families of frogs are known, most of which were named by the mid-1800s.

Rate the textual similarity of these two sentences on a scale from 0 to 5, where 0 is "no meaning overlap" and 5 is "means the same thing".

Answer: 4

Today in History, Dec. 2
Today in History, April 23

Rate the textual similarity of these two sentences on a scale from 0 to 5, where 0 is "no meaning overlap" and 5 is "means the same thing".

Answer: 2

Spain asks for bank rescue
Spaniard on trial for Cuban dissident's death

Rate the textual similarity of these two sentences on a scale from 0 to 5, where 0 is "no meaning overlap" and 5 is "means the same thing".

Answer: 0

A black dog emerges from the water with a white ball in its mouth.
a black dog walking out of the water with a white ball in his mouth.

Rate the textual similarity of these two sentences on a scale from 0 to 5, where 0 is "no meaning overlap" and 5 is "means the same thing".

Answer:
5