In this task you are given a medical question pair hand-generated. Your task is to classify a given post into two categories 1) 'Similar' if the given two questions have a same connotation 2) 'Dissimilar' if the given two questions have a different connotation or meaning.
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Question: Sentence1: Does lung cancer always effect oxygen levels. 
 Sentence2: I was diagnosed with lung cancer and I have been on therapy. My oxygen saturation levels have been around 90% and I am worried if this is ever going to improve. Should I ask my doctor if therapy needs to be changed?

Answer: Dissimilar


Question: Sentence1: Why is it that some nutrients bypass the liver entirely? 
 Sentence2: Does the liver absorb all the nutrients?

Answer: Similar


Question: Sentence1: I take Yaz (drospirenone and ethinyl estradiol) bc and I missed the last 11 days I had unprotected sex could I be pregnant and could I miss my period the following month from missing pill? 
 Sentence2: I am on yaz birth control pills and I missed my period. Do you think I am pregnant? I did not miss any pills and had unprotected sexual intercourse.

Answer:
Dissimilar