QC: Take the last letters of the words in "Elon Musk Tesla" and concatenate them.
QS: [split] What are the words in "Elon Musk"?
A: ["Elon", "Musk", "Tesla"]
QS: (project_values) [str_position] What is the last letter in "#1"?
A: ["n", "k", "a"]
QS: [merge] Concatenate #2 using a space.
A: "n k a"
QS: [EOQ]

QC: Take the letters at position 1 of the words in "Sundar Pichai Google" and concatenate them.
QS: [split] What are the words in "Sundar Pichai Google"?
A: ["Sundar", "Pichai", "Google"]
QS: (project_values) [str_position] What is the letter at position 1 in "#1"?
A: ["S", "P", "G"]
QS: [merge] Concatenate #2 using a space.
A: "S P G"
QS: [EOQ]

QC: Take the letters at position 4 of the words in "Oren Etzioni AllenInstitute" and concatenate them.
QS: [split] What are the words in "Oren Etzioni AllenInstitute"?
A: ["Oren", "Etzioni", "AllenInstitute"]
QS: (project_values) [str_position] What is the letter at position 4 in "#1"?
A: ["n", "i", "e"]
QS: [merge] Concatenate #2 using a space.
A: "n i e"
QS: [EOQ]