Task: Text Matching
Input (English): Sentence1: How accurate are the doctors measurements of the baby to determine baby weeks, due date, conception, ovulation etc... 
 Sentence2: My OBGYN said I am 8 weeks pregnant after an ultrasound scan was done but according to my period date and cycles, I should be 9 weeks pregnant with a different due date. Can you tell me how accurate is this calculation based on the baby's measurements on scan?
Output (English): Similar