15. The computer system of claim 13 , wherein the first program instructions to determine the respective numbers of words includes: ninth program instructions to determine a first number of words from the beginning of the sentence to a first term in the sentence that matches a first term in the combination of terms; tenth program instructions to determine a second number of words from the beginning of the sentence to a second term in the sentence that matches a second term in the combination of terms; and eleventh program instructions to determine a difference between the first and second numbers of words, wherein determining the confidence level by an execution of the third program instructions to determine the confidence level indicating how well the combination of terms represents the condition or problem which is the subject matter of the sentence is based in part on the difference between the first and second numbers of words.
15. The computer system of claim 13 , wherein the first program instructions to determine the respective numbers of words includes: ninth program instructions to determine a first number of words from the beginning of the sentence to a first term in the sentence that matches a first term in the combination of terms; tenth program instructions to determine a second number of words from the beginning of the sentence to a second term in the sentence that matches a second term in the combination of terms; and eleventh program instructions to determine a difference between the first and second numbers of words, wherein determining the confidence level by an execution of the third program instructions to determine the confidence level indicating how well the combination of terms represents the condition or problem which is the subject matter of the sentence is based in part on the difference between the first and second numbers of words. 16. The computer system of claim 15 , further comprising: twelfth program instructions, stored on at least one of the one or more storage devices for execution by at least one of the one or more processors via at least one of the one or more memories, to determine whether the difference between the first and second numbers of words exceeds a threshold; thirteenth program instructions, stored on at least one of the one or more storage devices for execution by at least one of the one or more processors via at least one of the one or more memories, to determine, in response to determining the difference between the first and second numbers of words exceeds the threshold by an execution of the twelfth program instructions, a first amount by which the difference exceeds the threshold; fourteenth program instructions, stored on at least one of the one or more storage devices for execution by at least one of the one or more processors via at least one of the one or more memories, to determine a second amount by multiplying the first amount by a factor; and fifteenth program instructions, stored on at least one of the one or more storage devices for execution by at least one of the one or more processors via at least one of the one or more memories, to adjust the confidence level by subtracting the second amount from the confidence level.