Identify the figure that best represents the relationship among the

ROSE, FLOWER, STONE

Identify the diagram that best represents the relationship among the given classes.
Furniture, Sofa, Tables

In the each of the Questions are given three statements followed by three conclusions numbered I ,II and III. You have to take the given statements to be true even if they seem to be at variance from the commonly known facts. Read all the conclusion and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.
 Statements: Some hills are rivers.
                    Some rivers are deserts.
                    All desert are roads.
 Conclusions: I. Some roads are rivers.
                    II. Some roads are hills.
                    III. Some deserts are hills.

In the following figure, square represents doctors, triangle represents artists, circle represents weight-lifters and rectangle represents Russians. Which set of letters represents Russians who are not doctors?

In the given figure, how many papers are also hard?

Find the area which shows students studying biology and computer but not mathematics.

Find out which of the diagrams given in the alternatives correctly represent the relationship stated in the question.
Sharks, Whales, Turtles. 

Select the venn diagram that represents the correct relationship between the following classes:

Doctor, Surgeon, Cardiologist