Table:
text: America's Got Talent (season 5)
Round chart
Round chart
Name_Name_of_Act Ages Genre Act Hometown Qtr_Final_Week Semi_Final_Week Position_Reached
Michael Grimm 30 Singing Singer/Musician Hancock County, Mississippi 2 1 Winner
Jackie Evancho 10 Singing Classical Crossover Singer Pittsburgh, Pennsylvania 5 2 Runner-Up
Fighting Gravity 19-22 Performing Blacklight Performers Blacksburg, Virginia 1 2 Third Place
Prince Poppycock 32 Singing Opera Singer Los Angeles, California 4 1 Fourth Place
Anna and Patryk 12 Dancing Ballroom Dancers New Hyde Park & Maspeth, New York 46 1 Eliminated
Christina & Ali 13 & 20 Singing Singing Sisters Idaho Falls, Idaho 1 1 Eliminated
Jeremy VanSchoonhoven 27 Performing Stunt Bike Rider Talent, Oregon 3 2 Eliminated

Question: How many semifinal weeks are there for Pittsburgh, Pennsylvania acts on America's Got Talent (Season 5)?