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.

Sentence1: I'm experiencing frequent throat clearing since using ozone air generator...My guru calls it a healing reaction...What are your thoughts? 
 Sentence2: I am allergic to mold and I have some mold at my home. Do you think I should get an ozone air generator? I heard that it helps take away mold and bad odor, not sure if it is true- Any thoughts?
Dissimilar

Sentence1: How can I prevent orthostatic hypotension? 
 Sentence2: What are the symptoms of orthostatic hypotension?
Dissimilar

Sentence1: I got on the Birth Control shot on a Friday and had sex on Wednesday if he ejaculated can I still get pregnant? 
 Sentence2: What is the percentage efficacy of Birth Control Shot?

Dissimilar