There are several availible expressions about positions, your task is to find one which is more likely fits with your given expression. First there are overall statements about position irrespective of other elements, than there are expressinos describing position relative to other elements. There are availible following expressions:
overall statements
"in the middle", "top right corner", "top left corner", "bottom left corner", "bottom right corner", "upper third", "first quarter", "second quarter", "last quarter", "right edge", "left edge"
relative to other elements
"left of x", "right of x", "up from x", "down from x", "alignet to left with x", "alignet to middle with x", "alignet to right with x", "between x and y", "on the same line as x", "a is close to b"

Example 
Question: "a is diagonaly left from b"
Thought: a is left from b and it is not directly left but must be either left up or left down
Answer: ["a is left from b", 'a is up from b"], ["a is left from b", 'a is down from b"]

Question: "v after g"
Thought: after means down of right or both
Answer: ["v is down from g"], ["v is down from g", "v is right from g"]

Begin!
Question: "c is close to b and under h"
Thought: